1N5818肖特基二极管；
IC1，MAX756升压控制器；
IC1的8-pin插座；
C1、C4，0.1uF陶瓷电容器；
X1，USB A型插座；
L1，22uH功率电感；
双面印刷电路板；

C2、C3，100uF/10V电解电容器。

2×AA电池盒；

好日子

想起了黄韵玲写的某首歌

这个BLOG离关闭没几个月了

再见

The Oceaneum in the Hanseatic city of Stralsund is a foundation for the German Maritime Museum belonging to natural history museum with a focus on the sea.

Parallel to the exhibitions in which the Hall of Katharinenkirche placed Maritime Museum in Stralsund Oceaneum on the island port to 8700 square meters of exhibition space in 39 tanks with a water volume of about six million liters of 7000 live animals and aquatic plants in a sub-ocean environment nachempfundenen shown. Contents [Verbergen]
1 Exhibition
2 aquarium
2.1 Stralsunder docks
2.2 Greifswalder Bodden
2.3 seagrass beds
2.4 Chalk coast
2.5 Archipelago Sea
2.6 estuary
2.7 Kattegat
2.8 Wattenmeer
2.9 Helgoland
2.10 1:1 giants of the seas
3 buildings
4 Engineering
4.1 Electricity
4.2 Water
4.3 Cooling
4.4 Measurement
5 History
5.1 Number of Visitors
6 single proof
7 Weblinks

[Edit] Exhibition

Submersible GEO

In addition Stralsunder Oceaneum are life-size Walexponaten also swarm of fish ponds for herring, mackerel, flounder, pike, salmon, cod, sturgeon, sharks, lobsters and predatory, a total of 39 large aquariums and an aquarium tunnel to see. Six million liters of water making the total pool.

Over two floors, the Helgoland aquarium built. A tidal pool, a surf pool, as well as with the 2,600 cubic meters of Germany’s largest aquarium offers insight into the lives of European cold polar seas to the underwater world. There are exhibitions “Sea World”, “The Baltic Sea”, “exploration and use of the seas”, “Sea for Children” and “giant of the seas.”

The exhibition also includes exhibits of the Sea, as the dive boat “Geo”, a lander and a deep Epibenthosschlitten. Also a model of the freighter Beluga SkySails is shown.

[Edit] Aquarium

The aquarium has been a financial outlay of about 500,000 euros designed. Among the stone structures are plastic frames, which the company Pangea Rocks provided. The scaffolds were covered with mesh fabric and then lightweight concrete forms and colors SILICATE color.

Many of the plants in the basin are artificially, for example, a seagrass meadow and up to two meters tall algae.

The aquarium is the largest swarm of fish pool with a floor area of 300 square meters and a curved, 10 mx 5 m wide and 30 cm-thick acrylic panoramic windscreen.

Shoal of fish tank

Aquarium Stralsund docks ”

[Edit] Stralsunder docks

The tour begins with a ten-meter-long aquarium where the conditions in just a few meters away from Stralsund docks are postpositive. Perch, roach, lead, pike and perch swim in the pool, including a 1982 in the port basin contains found rusty bicycle.

The basin contains 126,000 gallons of water with a salinity of 5 g / l and a temperature of 12 ° C. On a base of 34.9 sq meters, the water level 3.60 meters. The slice of the pelvis attaches 5.90 mx 2.95 m, is 17,3 cm thick and weighs 4.1 tonnes

[Edit] Greifswalder Bodden

Followed by a six-meter-long brackish pools, which Greifswalder Bodden lookalike and even small parts of a shipwreck contains. Flounders, flatfish, bass and Wollhandkrabben and shrimp live in this basin.

The aquarium contains 47,500 liters of water with a salinity of 5 g / l and a temperature of 12 ° C. On a base of 19 square meters of 2.50 m water level. The slice of the pelvis attaches 4.65 mx 2.40 m, is 11,9 cm thick and weighs 1.9 tonnes

[Edit] seagrass beds

The following is an aquarium with representations of the seagrass beds in shallow areas of the Baltic Sea. In this basin live pipefish, Sculpins and Seehase.

[Edit] Cretaceous Coast

This is a tank in which the island is postpositive coast and the big fish of the Baltic Sea are shown. The aquarium contains 100.000 liters of water with a salinity of 15 g / l and a temperature of 9 ° C. On a floor area of 30 sq meters, the water level 3.35 meters. The slice of the pelvis attaches 4.10 mx 2.95 m, is 13,7 cm thick and weighs 2.4 tonnes

[Edit] Archipelago Sea

Here the pool for Archipelago Sea with Seewölfen and char. The aquarium contains 17,000 liters of water with a salinity of 5 g / l and a temperature of 12 ° C. On a base of 68.9 sq meters of water is 2.50 m. The slice of the pelvis attaches 4.18 mx 2.35 m, is 8.4 cm thick and weighs 1.3 tonnes

[Edit] Estuary

The aquarium is located at the time after a defect in the (re-) construction. The aquarium is 64,500 liters of water with a salinity of 15 g / l and a temperature of 9 ° C contain. At a base from 25,8 m², the water level 2.50 m, then. The disc of the basin measured 7.00 mx 2.30 m, is 6 cm thick and weighs 1.6 tonnes

[Edit] Kattegat

The large Kattegataquarium offers an eight-meter-long Felskulisse. Starfish, Seedahlien and octopuses are shown.

The aquarium contains 43,000 liters of water with a salinity of 25 g / l and a temperature of 12 ° C. On a base of 13.6 sq meters, the water level 2.40 meters. The slice of the pelvis attaches 5900 mx 2.30 m, is 11.7 cm thick and weighs 2.3 tonnes

[Edit] Wattenmeer

The Wadden Sea is a three-meter pool, as well as numerous smaller individual basins postpositive. The tides are in the aquarium at intervals of 30 minutes imitated.

[Edit] Heligoland

With an underwater tunnel to get to the coast Helgoländer imitation. Gone in a basin, the North Sea, which is the polar sea aquarium with 17,000 liters of water, which is just above zero degrees Celsius aufweist. In the subsequent 17 meters wide and nine meters high, circular pool is the vastness of the sea shows. 2.6 million liters of water, Germany’s largest aquarium, a swarm of herring with 2000 animals, rays, sea bream and herring sharks should be here.

Blue whale in the exhibition hall

[Edit] 1:1 giants of the seas

In the exhibition “1:1 giants of the seas’ in a 18-meter-high hall natural models of blue whale, Humpback, Schwertwal and sperm whale shown. In the tone Walgesänge hall, visitors can also lying in the models below.

This exhibition is supported by the organization Greenpeace, which also the transport of a stranded whale from Wismar after Stralsund had organized. At that time, the whale, however, initially for one day after the Berlin brought the Japanese Embassy to oppose the whaling protest.

[Edit] Building

View from the port

Panoramic view from the city side

The draft for the new museum comes from the architect Elke Reichel and Peter Schlaier of Stuttgart’s architecture firm Behnisch, Behnisch & Partner. The barrier-free construction that is architecturally integrated into the overall picture of the port insert Stralsunder had to check the status of the Old Town Stralsunder as UNESCO World Heritage Site with the title “Historical old town of Stralsund and Wismar” not to compromise, it was created into small. The four buildings symbolize seawater surrounded by stones.

The building, part 1, there is a family restaurant and exhibitions, “Sea World - The Diversity of Life”, “The Baltic Sea” and “exploration and use of the seas”, in Part 2 of building the Baltic Sea Aquarium, Part 3 in the building the North Sea Aquarium swarm with fish tanks and the exhibition “A Sea for Children “and the Building 4, the exhibition” 1:1 - giants of the seas. ” The historical memory accommodate more restaurants, the educational department and a conference center.

The company Hydro took over Sight Reynolds Polymer together with the contract, the 30 aquariums window manufacture and install. As a special challenge was the so-called Crypt window, with a width of 13 m in the swarm of fish basin looks.

The total cost for the building were first with about 50 million euros, with the federal government with 25, the state of Mecklenburg-Vorpommern with 12.5, the German Maritime Museum Foundation at 7.4 and the Hanseatic city of Stralsund with 5.1 million euros should participate. In December 2007, after 15 months of construction, construction costs were already about 60 million euros [1], mainly because of increased steel and glass prices was due.

The Oceaneum need 550,000 visitors annually, so that it carries.

[Edit] Tech

Look at the supply engineering of the aquarium “estuary”

Overall, the pipelines for water, coolant, oxygen, ozone, carbon dioxide and more than ten kilometers long. This length is even more by the length of the installed power exceeded.

[Edit] Power

The operation of the Oceaneum consume as much energy as, for example, the city Sassnitz [2]. The Oceaneum with green electricity supplies.

[Edit] Water

The water in the basin salinity at various points. For the review, a total pool of around 4000 cubic meters of water are needed, are also around 6,000 cubic meters of water as a substitute in storage tanks ready. This water is contamination or lack of oxygen in the show pool is used. With uninterrupted operation of the water about once a year completely.

The supply of salt water can be done in two ways: Is tap water with salt added, would Oceaneum per year in some 210 tons of salt needed. The plan is, however, in ballast water from freighters or in the water tank of multi-vessel “Arkona” salty sea water are provided, then the salt is enriched. This would be a year about 150 tons of salt needed.

The Filteranlangen include about 350 cubic meters Biofiltermaterial. These consist of porous plastic pellets, in which microorganisms settle; fish poisons such as ammonia and nitrite are decomposed into harmless compounds. Also sand filters, Siebtrommelfilter, protein skimmer, UV disinfection, water softeners and osmosis systems provide for the cleaning of the aquarium water.

[Edit] Cooling

The water in the basin, where temperatures between 0 ° C and 12 ° C prevail, must be constantly cooled. That is about one megawatt cooling needs. Two of the city of Stralsund works in the adjacent storage towers operated refrigerating machines cool water to six degrees, which is then pumped into the cooling system is. An additional cooling system ensures the 0 degree cold water in the polar aquarium.

[Edit] Measurement

In the aquarium provide hundreds of sensors important data on pH, temperature and flow velocity of the water. The company, Siemens provides the equipment for the building. The data of 15,000 points recorded values are centrally evaluated.

[Edit] History

Oceaneum the site in March 2007

In 1998 the idea was developed, Marine Museum develop. The museum’s most northern Germany in the former Katharinenkirche was at its geographical limits. Under the direction of the Museum Heads Harald Benke, the idea of an oceanarium with glass tunnels, a seal system and other exhibitions developed. With support from the city administration under Mayor Harald Lastovka the idea was taken further. On 1 August 2002 informed Chancellor Gerhard Schröder in Stralsund on the project and assured that “the federal government such a great project not close” to. [3] In February 2003, the commitment of financial resources by the federal government.

In June 2003, the Stralsunder citizenship procedures for the construction plan, the Oceaneum launched on 23 June 2005 with the unanimous decision of the Statute of the citizenship has been completed successfully.

On 6 September 2005 in the presence of the Prime Minister of Mecklenburg-Western Pomerania, Harald Ringstorff (SPD), the first ground-breaking ceremony. On 24 November 2005 started the construction work on the area with the setting of pile foundations in predatory practices. On 15 September 2006 saw the foundation stone, and Others in the presence of German Chancellor Angela Merkel, Prime Minister Harald Ringstorff and Stralsund Mayor Harald Lastovka.

The project marine worlds mediated by the end of October 2006 on the island in a harbor Traglufthalle already a small glimpse into the world of the oceans. The “Hemisphere” was dismantled in November 2006 and the exhibition as a traveling exhibition by Germany. In the canon Kronlastadie shed on the models, plans and information about the construction of the Oceaneum offered. The Tourism Center Stralsund offered tours to the construction and to further port development.

In the summer of 2007, there were first public tours to the site, and on 23 June 2007 was held at the Federal Oceaneum prelude to the day of the architecture. In the United States prepared slices were large aquariums in July 2007 using cranes collected in the building. In the same way it was also Germany’s longest cantilever escalator used. The exterior is painted white with steel design.

With the founding of Stralsund GmbH Oceaneum on 6 September 2007 took over the director Dr. Harald Benke and Markus J. Bloching the task of management.

In October 2007 the first of about 3,000 fish from the North Atlantic by a research expedition activities of the German Maritime Museum in Stralsund Kühltransporter after and brought into the already finished Aquaria (quarantine tank) is set.

On 13 December 2007 was celebrated the topping-out ceremony, the exhibits and aquariums were finally on 11 July 2008 by the German Chancellor Angela Merkel opened. The opening to the public took place on 12 July 2008, where not all the exhibits were complete. Pending the completion of all aquariums were discounts.

Many vinyl products contain additional chemicals to change the chemical consistency of the product. Some of these additional chemicals called additives can leach out of vinyl products. Plasticizers that must be added to make PVC flexible have been an additive of particular concern.

Because soft PVC toys have been made for babies for years, there are concerns that these additives leach out of soft toys into the mouths of the children chewing on them. Additionally, adult sex toys have been demonstrated to contain high concentrations of the additives.[11] In January 2006, the European Union placed a ban on six types of phthalate softeners, including DEHP (diethylhexyl phthalate), used in toys.[12] In the U.S. most companies have voluntarily stopped manufacturing PVC toys with DEHP and in 2003 the US Consumer Product Safety Commission (CPSC) denied a petition for a ban on PVC toys made with an alternative plasticizer, DINP (diisononyl phthalate).[13] In April 2006, the European Chemicals Bureau of the European Commission published an assessment of DINP which found risk “unlikely” for children and newborns.[14]

Vinyl IV bags used in neo-natal intensive care units have also been shown to leach DEHP. In a draft guidance paper published in September 2002, the US FDA recognizes that many medical devices with PVC containing DEHP are not used in ways that result in significant human exposure to the chemical[1]. However, FDA is suggesting that manufacturers consider eliminating the use of DEHP in certain devices that can result in high aggregate exposures for sensitive patient populations such as neonates.

Other vinyl products, including car interiors, shower curtains, flooring, initially release chemical gases into the air. Some studies indicate that this outgassing of additives may contribute to health complications, and have resulted in a call for banning the use of DEHP on shower curtains, among other uses.[15] The Japanese car companies Toyota, Nissan, and Honda have eliminated PVC in their car interiors starting in 2007.

In 2004, a joint Swedish-Danish research team found a statistical association between allergies in children and indoor air levels of DEHP and BBzP (butyl benzyl phthalate), which is used in vinyl flooring.[16] In December 2006, the European Chemicals Bureau of the European Commission released a final draft risk assessment of BBzP which found “no concern” for consumer exposure including exposure to children.[17]

In November 2005, one of the largest hospital networks in the U.S., Catholic Healthcare West, signed a contract with B.Braun for vinyl-free intravenous bags and tubing.[18] According to the Center for Health, Environment & Justice in Falls Church, VA, which helps to coordinate a “precautionary” ” PVC Campaign”, several major corporations including Microsoft, Wal-Mart, and Kaiser Permanente announced efforts to eliminate PVC from products and packaging in 2005. Even Target is reducing its sale of items with PVC. (http://besafenet.com/pvc/newsreleases/target_to_reduce_use.htm)

The FDA Paper titled “Safety Assessment of Di(2-ethylhexyl)phthalate (DEHP)Released from PVC Medical Devices” states that [3.2.1.3] Critically ill or injured patients may be at increased risk of developing adverse health effects from DEHP, not only by virtue of increased exposure, relative to the general population, but also because of the physiological and pharmacodynamic changes that occur in these patients, compared to healthy individuals.[19]

In 2008, The European Union’s Scientific Committee on Emerging and Newly Identified Health Risks (SCENIHR) reviewed the safety of DEHP in medical devices. The SCENIHR report states that certain medical procedures used in high risk patients result in a significant exposure to DEHP and concludes there is still a reason for having some concerns about the exposure of prematurely born male babies to medical devices containing DEHP. The Committee said there are some alternative plasticisers available for which there is sufficient toxicological data to indicate a lower hazard compared to DEHP but added that the functionality of these plasticisers should be assessed before they can be used as an alternative for DEHP in PVC medical devices.

[edit] Vinyl chloride monomer
In the early 1970s, Dr. John Creech and Dr. Maurice Johnson were the first to clearly link and recognize the carcinogenicity of vinyl chloride monomer to humans when workers in the polyvinyl chloride polymerization section of a B.F. Goodrich plant near Louisville, Kentucky, were diagnosed with liver angiosarcoma also known as hemangiosarcoma, a rare disease.[20] Since that time, studies of PVC workers in Australia, Italy, Germany, and the UK have all associated certain types of occupational cancers with exposure to vinyl chloride. The link between angiosarcoma of the liver and long-term exposure to vinyl chloride is the only one that has been confirmed by the International Agency for Research on Cancer. All the cases of angiosarcoma developed from exposure to vinyl chloride monomer, were in workers who were exposed to very high VCM levels, routinely, for many years. These workers cleaned accretions in reactors, a practice that has now been replaced by automated high pressure water jets.

A 1997 U.S. Centers for Disease Control and Prevention (CDC) report concluded that the development and acceptance by the PVC industry of a closed loop polymerization process in the late 1970s “almost completely eliminated worker exposures” and that “new cases of hepatic angiosarcoma in vinyl chloride polymerization workers have been virtually eliminated.”[21]

According to the EPA, “vinyl chloride emissions from polyvinyl chloride (PVC), ethylene dichloride (EDC), and vinyl chloride monomer (VCM) plants cause or contribute to air pollution that may reasonably be anticipated to result in an increase in mortality or an increase in serious irreversible, or incapacitating reversible illness. Vinyl chloride is a known human carcinogen that causes a rare cancer of the liver.”[22] EPA’s 2001 updated Toxicological Profile and Summary Health Assessment for VCM in its Integrated Risk Information System (IRIS) database lowers EPA’s previous risk factor estimate by a factor of 20 and concludes that “because of the consistent evidence for liver cancer in all the studies…and the weaker association for other sites, it is concluded that the liver is the most sensitive site, and protection against liver cancer will protect against possible cancer induction in other tissues.”[23]

A 1998 front-page series in the Houston Chronicle claimed the vinyl industry has manipulated vinyl chloride studies to avoid liability for worker exposure and to hide extensive and severe chemical spills into local communities.[24] Retesting of community residents in 2001 by the U.S. Agency for Toxic Substances and Disease Registry (ATSDR) found dioxin levels similar to those in a comparison community in Louisiana and to the U.S. population.[25] Cancer rates in the community were similar to Louisiana and US averages.[26]

[edit] Dioxins
The environmentalist group Greenpeace has advocated the global phase-out of PVC because they claim dioxin is produced as a byproduct of vinyl chloride manufacture and from incineration of waste PVC in domestic garbage. The European Industry, however, asserts[citation needed] that it has improved production processes to minimize dioxin emissions.

Also, scientific tests wherein municipal refuse containing several known concentrations of PVC was burned in a commercial-scale incinerator showed no relationship between the PVC content of the waste and dioxin emissions. [27] [28]

PVC produces HCl upon combustion almost quantitatively related to its chlorine content). Extensive studies in Europe indicate that the chlorine found in emitted dioxins is not derived from HCl in the flue gases. Instead, most dioxins arise in the condensed solid phase by the reaction of inorganic chlorides with graphitic structures in char-containing ash particles. Copper acts as a catalyst for these reactions. [29]

Dioxins are a global health threat because they persist in the environment and can travel long distances. At very low levels, near those to which the general population is exposed, dioxins have been linked[citation needed] to immune system suppression, reproductive disorders, a variety of cancers, and endometriosis. According to a 1994 report by the British firm, ICI Chemicals & Polymers Ltd., “It has been known since the publication of a paper in 1989 that these oxychlorination reactions [used to make vinyl chloride and some chlorinated solvents] generate polychlorinated dibenzodioxins (PCDDs) and dibenzofurans (PCDFs). The reactions include all of the ingredients and conditions necessary to form PCDD/PCDFs…. It is difficult to see how any of these conditions could be modified so as to prevent PCDD/PCDF formation without seriously impairing the reaction for which the process is designed.” In other words, dioxins are an undesirable byproduct of producing vinyl chloride and eliminating the production of dioxins while maintaining the oxychlorination reaction may be difficult. Dioxins created by vinyl chloride production are released by on-site incinerators, flares, boilers, wastewater treatment systems and even in trace quantities in vinyl resins.[30] The US EPA estimate of dioxin releases from the PVC industry was 13 grams TEQ in 1995, or less than 0.5% of the total dioxin emissions in the US; by 2002, PVC industry dioxin emissions had been further reduced by 23%.[31]

The largest well-quantified source of dioxin in the US EPA inventory of dioxin sources is barrel burning of household waste.[32] Studies of household waste burning indicate consistent increases in dioxin generation with increasing PVC concentrations.[33] According to the EPA dioxin inventory, landfill fires are likely to represent an even larger source of dioxin to the environment. A survey of international studies consistently identifies high dioxin concentrations in areas affected by open waste burning and a study that looked at the homologue pattern found the sample with the highest dioxin concentration was “typical for the pyrolysis of PVC”. Other EU studies indicate that PVC likely “accounts for the overwhelming majority of chlorine that is available for dioxin formation during landfill fires.”[34]

The next largest sources of dioxin in the EPA inventory are medical and municipal waste incinerators.[35] Studies have shown a clear correlation between dioxin formation and chloride content and indicate that PVC is a significant contributor to the formation of both dioxin and PCB in incinerators.[36]

In February 2007, the Technical and Scientific Advisory Committee of the US Green Building Council (USGBC) released its report on a PVC avoidance related materials credit for the LEED Green Building Rating system. The report concludes that “no single material shows up as the best across all the human health and environmental impact categories, nor as the worst” but that the “risk of dioxin emissions puts PVC consistently among the worst materials for human health impacts.” [37]

[edit] Bans
The State of California is currently considering a bill that would ban the use of PVC in consumer packaging due to the threats it poses to human and environmental health and its effect on the recycling stream.[38] Specifically, the language of the bill analysis[39] stipulates that EPA has listed PVC as a carcinogen. It is also further cites that there are concerns about the leaching of phthalates and lead from the PVC packaging.

[edit] Recycling
The symbol, or ‘SPI code’, for polyvinyl chloride developed by the Society of the Plastics Industry so that items can be labeled for easy recycling is:
The Unicode character for this symbol is U+2675 (HTML character reference ♵).

Post-consumer PVC is not typically recycled due to the prohibitive cost of regrinding and recompounding the resin compared to the cost of virgin (unrecycled) resin.[citation needed]

Some PVC manufacturers have placed vinyl recycling programs into action, recycling both manufacturing waste back into their products, as well as post consumer PVC construction materials to reduce the load on landfills.[citation needed]

The thermal depolymerization process can safely and efficiently convert PVC into fuel and minerals, according to the company that developed it. It is not yet in widespread use.

A new process of PVC recycling is being developed in Europe called Texiloop.[40] This process is based on a technology already applied industrially in Europe and Japan, called Vinyloop, which consists of recovering PVC plastic from composite materials through dissolution and precipitation. It strives to be a closed loop system, recycling its key solvent and hopefully making PVC a future technical nutrient.

记得这个BLOG刚搭起来的时候某人写过这个

不过那纯属乱写

这篇呢？更是乱写

这是不是最后篇呢？

有可能

今天这个日子很特殊，不是特伦苏

一个让人豁然开朗的日子

一个让人期待已久的日子

道德菩提非正果

今日方知我是我

再见！

NCIS演到第6季了

唯独这季和以前的感觉完全不一样

片尾GIBBS坐在车里，通过后视镜看到火车站

镜头转回30年前他离开小镇的时候

一个大男孩穿着军装准备出发

一个可爱的金发女孩

就这么开始了

一晃却30年，天上人间

妻女死去

他独自做着那艘永远做不完的船

可惜了一部好剧，在国内没啥知名度

继续伤感中0_0

趁着开会的空档，去了学校一躺

说来也怪，自从那年在后门吃了散伙饭后，期间虽然偶有几次路过

全是来去匆匆，都没仔细看上几眼

甚至有次专门去看，却因为是假期，学校里荒无人烟而兴致缺缺

刚进门，保卫就把我拦住了，找谁啊，胡乱报上几个印象中的名字后终于得以放行

迎宾大道一如往昔

两边树木依旧耸立，估计是因为校庆的原因，还绑上了红旗

旁边的小操场正进行着足球比赛，对哦，校庆嘛，不就伴随着的是运动会嘛

多少年的传统看来还在继续嘛

正对的老毛雕像比原来白了不少

看来每年的美白工程并没有落下，他们是不是也看过大S的美容大王呢？

接下来就是真正让我震惊的了

北楼

没了…………..

南楼

没了…………..

谁说刻在柱子上的名字就一定能保存下来呢

那些属于我们的印记现在不过仅仅是我们心中的回忆而已

南北两楼，比原来壮观了不少

可是却没有了那种亲切的感觉

本来准备好了相机准备大拍特拍的

可最后的结果却是一张也没拍

因为即便拍了，我也不知道哪是哪了

还好，校训墙的位置还在

按照事先Lanthanum的指点

顺利的找到了那个优秀教师宣传栏

看到了敬爱的刘老师

看照片，老刘依然开朗，想起他的笑容我也浑身寒颤

不过老刘似乎老了些，白头发都出来了，7年了，不短的时间啊

操场上

果不其然，运动会

校园里很热闹，很好，至少让我觉得自己还不算太老

只是能认出的建筑不多了

这很怪，路完全没变，可房子全换了

还好那栋顶着个馒头的科学馆还在，否则我还真得怀疑自己是不是走错地方了

有点后悔，应该早几年来看看啊，现在什么都没了

原来那些过去真的成了过去