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200663գѧʦƶȽͩڱ
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ڲܻѾ֤Ӽ롣ʦ˵Ǵ¥ǰ˴˻
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ȻϲýγԱȵǣһ춯ص
ţѧķӦ䵭˲˼ĵزϢ֮
GoogleѯPoincar Conjectureֻܲ鵽ЩϢӢķ롣й
ѧҵľ֮ѧļʧɽĲ֮Сѵ
ʦ˵ǰֻǸ¥˸йѧġ
֪κһִѧս޲վǰ˵ļ
ɵġʮǰ˹ٴѧ߶˹Andrew Wiles
ɵķѶ֤һΡⶥ

ֱձ721յһƪӼר£ν
ġⶥǱҿصɴΪ߲ѯҽӢԭĸ
ĩֻժҪ롰ⶥйصϢ

20022003꣬ѧGrigori Perelmanһ浵վ
ƪģӼ֤ݸ塣ûἰӼ룬
ΪΪ֤һ㷺⣬Ӽ벻еһ۶
ѡĲڿҪϽʽдɵģʮֻɬѶ
ѧڴϸ֤ʱƵȴʿһ
˼ٻӦ

ҲĵʲӦ볣˽ġΪ
ҪΪЩȻĽӽ˵ޱ֤
հףǲ⣬ķʱЩ˵ϸڣȥЩ
Ҫ¡

ѧͼȥµĿհס2003ֻ
22ҳ200239ҳѧĿ(Kleiner)(Lott)
мġע͡(Notes on Perelmans Papers)ȴ192ҳ֮
һҪĹĵҳ֮ࡣ

Ҳᵽλйѧҵģϸµġѧڿϡ
ʿͻƣдɵģӼһ֤328ҳ
׶ŵڳƴ͹һӵİ֡

ӵİ֡һٵ൱ġ֡׶ŵڿ
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ƻϷרǶӼĹйۣ뵽֤
ڴýڻһֽ͡Ϊ֤ڰ
ʾǰеİ֤ǡ֤(incomplete proofs)һ
治ľҲ֧ľǲʹӵĹܵġ

˳˵һ䣬ͩǡѧڿࡣ׶ŵ(John 
Milnor)ŦԼѧʯϪУĽڣڵͬ£1962ķƶȽ
שͷjack@math.sunysb.edu

¼˵ֵǣⱾ飨עָ-֤ܵ-
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ſԽΪʲôλѧڱ˷ⶥϢʱһµѡ
˳Ĭ

¼ձר

The Wall Street Journal Home Page
Friday, July 21, 2006 

SCIENCE JOURNAL
By SHARON BEGLEY 
Major Math Problem Is Believed Solved By Reclusive Russian 
July 21, 2006; Page A9 

For six years, $7 million in prize money has lay unclaimed at the Clay 
Mathematics Institute in Cambridge, Mass., waiting for someone to 
solve any of the seven "millennium prize problems," the oldest of 
which has been kicking around since 1859. Despite periodic claims, it 
looked like the institute would hold on to the cash until after the 
sun burned out. 
But the math world is abuzz over the very real possibility that one 
millennium problem, the Poincar conjecture, has been proved by a 
mathematician in Russia. After nearly four years of scrutiny by other 
mathematicians, the work holds up, even though Grigori Perelman's work 
is decidedly unusual. 
In 2002 and 2003, he posted two papers to an online archive. Usually, 
a posting serves a flag-planting function -- "I solved this first!" -- 
until the paper is published in a journal, which can take years. But 
as the math community waited for him to follow up his postings, a 
realization set in. Dr. Perelman, long affiliated with the Steklov 
Institute of Mathematics in St. Petersburg, apparently has no 
intention of saying more. He probably feels he proved the Poincar 
conjecture, mathematicians surmise, and has no interest in the $1 
million bounty. (He did not respond to emailed requests for comment.) 
Dr. Perelman's style is reminiscent of the Sid Harris cartoon of a 
board filled with equations and, at a key step, the words, "then a 
miracle occurs." One mathematician tells the other, "I think you 
should be more explicit here in step two." 
The conjecture Henri Poincar posited in 1904 is the most famous 
problem in topology, the branch of math that analyzes the shape of 
objects and space. He claimed, "if a closed 3-dimensional manifold has 
trivial fundamental group, [it must be] homeomorphic to the 3-sphere," 
as John Milnor of Stony Brook University puts it. 
Translated, that means that if you wrap one rubber band around the 
surface of an orange and another around a doughnut, and shrink down 
both, the rubber bands act differently. The one around the orange 
keeps shrinking without tearing or leaving the surface. The one around 
the doughnut can't, without breaking itself or the doughnut. This 
difference says something profound about the structure of space itself. 
Many mathematicians have claimed to prove Poincar, but the claims 
flamed out immediately, their fatal flaws obvious. Dr. Perelman's 
proof has survived. The dilemma for the Clay Institute is that, 
according to its rules, a proof must be published in a refereed math 
publication. The archives aren't refereed. 
Putting his proof online rather than in a journal is only one example 
of Dr. Perelman's iconoclasm. He admits that he gives only "a sketch 
of an eclectic proof of" a more general conjecture from which Poincar
's follows; he never mentions Poincar. The papers are difficult to 
understand, and sketchy in the extreme. He asserts that one can prove 
something by a variation on an earlier argument, but it isn't clear 
what the variation is. "Perelman's papers are written in a style 
rather different from what would appear in a journal," says 
mathematician Bruce Kleiner of Yale University. 
The sketchiness may reflect how a genius interacts with mortals. Dr. 
Perelman may believe some things are so obvious he needn't bother to 
explain them step by step, say mathematicians. If readers are too dumb 
to fill in the blanks, he doesn't care. Or, he has better things to do 
than justify every tortuous step, as proofs must. 
Others have taken it upon themselves to explicate his work -- and find 
no major flaws. Like Torah commentaries, they dwarf the original. Dr. 
Perelman's 2003 paper is 22 pdf pages; the 2002 paper is 39. But 
"Notes on Perelman's Papers," in which Prof. Kleiner and John Lott of 
the University of Michigan explain them almost line-by-line, is 192 
pages. A book on the papers is expected to top 300 pages. A "complete 
proof" of Poincar, based on Dr. Perelman's breakthrough and 
published last month in the Asian Journal of Mathematics (which Prof. 
Milnor describes as throwing "a monkey wrench" into the question of 
who gets credit), is 328 pages long. 
Oddly, either the book or the Kleiner-Lott paper might count as the 
"refereed" work the Clay Institute demands. If so, we would have the 
weird situation in which authors of the work that satisfies the prize 
requirement aren't the people who figured out the proof. But their 
efforts could win Dr. Perelman $1 million. 
"It's definitely an unusual situation, but what's important is that 
the person who made the breakthrough put it out there so the community 
could scrutinize and analyze it," says institute president, James 
Carlson. 
Dr. Perelman shuns the limelight, but is known through lectures in the 
U.S. and for getting a perfect score at the 1982 International 
Mathematical Olympiad, at age 16. He isn't expected at the quadrennial 
meeting of the International Congress of Mathematicians, in Madrid. 
There, the Fields Medal, math's Nobel Prize, will be awarded to the 
"outstanding" mathematician 40 or under. Dr. Perelman is the odds-on 
favorite. 
And the millennium prizes? "I don't think the other six will be solved 
in my lifetime," says Dr. Carlson. "But then, I didn't think the 
Poincar conjecture would be solved either." 
? Email me at sciencejournal@wsj.com.

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Ϸлͼʤɫذܡ

νϷķǳƽӹ˼άëںͳ,
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ҥԼʽ϶ûЩʵݡһǸоܲ졣

Фṩ֤ݱФֻιŦԼѧڣ
һ⽱ѧSCI¼4ƪ27ƪ˿ѧɾͺ
ͣ51ˣ˳ɼйһԺõĴѧӦƸڶѣ
ʵʵڵصõ˹ȻѧصĿܳ𣬻Ϊ
൱׵Ĺ973ƻϯѧңȥ껹ȥԺʿҽһ֡
ΪһƼߣФṩ֤ݿѧˮƽӦǺƽӹ
걨ûԴޣôǿʲôõЩأ

̫үĵӰɣٺ١

ߣlimitations

    СڳҪйƼϷָ˵Ц󷽡

(XYS20060725)

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Ҳ˵ʦ֪ʶӲ

Ϊ

ˣXYS20060723˴ġʦ֪ʶӲˡһģɵ
뵽ٱסԴڡӴ¡еһλ
Ϊ٣ڻΪףҶͽƣʵζͬȻߺΣˮ
ҲڻϷ٣˻ӵıͱס
Ȼͬġ

ӴǼʱμҡ˼Ӥеһ飬
ԼսĩǧˡҲ˵ǧǰѾ֪
̬ͬȻذѻΪйϷ뱱ʵʵڵ
ֽߡǧĵΪΪֽй
ɴ֮һߡ

˵վڻӱϣѿϱ֮֡
ǾʵΪǰ˵ˡҶͽơ濴һġ
ϱվڻӱϿ𣿵಻֪ʵζͬ
˵ˮҲ⿴󣬲ʵݣžǵĴ
ѹվڻӱȴҲűˡ

಻ѧ֪ʶӲˣĿ֪ʶҲôġΪй
ҵ־࣬ѧ֮ǰſڿӣ󵼶ߡ

07242006

(XYS20060725)

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ҽҽͶ

ղϲƽ

Сʱ֪λĵĴ˵һԱףгҩһԾʮ꣬
ϴѧ®ɽܣ޷ҩס漣Ȼ
Աףѯҽʱëʮꡰ衱
ҩζ·Ҫ硣

Ƕҩġ޸ۡŲѡʮǰһëвҩ
һԾ꣬ˡͷũٲݣһζһζسʼ
ûЧϺҽ˸ҽϣëغ

ʮǰҵĸ׻θ˵ҽҰָʾ
ȡĺˮҩ֮Ҩ99ΣһҨһᣬȻʼΪĸ׼ҩ
˼£ĸ׺ΪŰڣòȫθгĸ׺
ΣҨˮ99γΪԶļ䡣

ҳˣھòҽÿεҽԺȱ没飬Ҫ
ҽʲôҩϰʹˡѡΪҽҪ
Ϻ߾ҩҩ꣬ûҽĴԲ򵽴ҩ
֪ҩ˵Ĳҩȥˣ˷ȴΥ

Ȼҽ˵ҽεҲǶ

һұаʷıȽѧ־Journal of 
Comparative Neurologyܡڸ漰Լ豳ͨϺ
񾭵ĵһ񾭺ţͨ·ͶϺ΢·ͨ·
оĳйأʹ˵ϵͳκб
һϵͳ뵽ͷойصĶҲ˽⵽ܹ
ԼмӽһڵĹΪо
ֶҽеĽ綨ҽƵھʼһ
˼ǧĶִоȫԵһӵ
漰ڶڽṹͻѧʡһַǳձĲй
ж顣ϸʵҲܸӣЩԵģ
ЩԵġĶ漰һЩ뾭ϵͳϢ޹
񾭽ṹԶ漰ëϸ̬Լ֧ͷ
񾭣νԶǣĿǰκһֶв
֪ȷ񾭻·ʡӵĲҽѶһ
ɹڡ顱

ҽѧĵطǶԲĽ綨ɴ˶Ҳ͡ģ
塣ϣҽһЩԭĳζҩǸʵҽʦ
ʵԭʼٴʵ飺ÿƳ̻ζҩDDûû˵ػûû
ԡֻҪģֻҪжûкôҲ޸õģֻҪһ
ɬʲôζܣֻҪвֻҪʱ䣬ֻҪչ˾
Ԥڲ˶ҽäĿκͿȣҩνЧʵ
Ϸӵνοðˣ൱ĳ̶ϣҽҩͶ
޹ν״̬ҽִĴڣĳ̶ֳԴľ޴
ѡ 

(XYS20060725)

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ĳѧ᳤粨

ѧ

ʮǰ,Ϊо,浼ʦһϯ˷ѧĳѧڻĳоеһ
ᡣ

ͷ,,ۻͦġһرעϵʵ,
̰,ٵ, ̧۵ļ,оܻ,ѧ
ĳЩαѧα塱˵3 , մ䡣۷ԺܲӻԾ, 
̨ϷԵ̨¡Ѷ˵ų̂һѶ, 
ѧУ(رǼУ) ۼġΪסСᡱ, ĳҵĵӡ
,Ƿˡѡ̨Ϸ,ͱкһСᡱȦڡ
Ҫѡ᳤ˡע: ,̫,αضӻ᳤λȥ
ǵġ, Ȼ츱᳤, ʸһλ᳤Ǵ
ѧУ,ѧУ,ܲѧУĴ,Ҫšһ
СA ,ȥԱѧļλ;СB ,ȥԱѧǼλŮ; СC , 
ȥȰȰѧǼλо, ǶͶǡϵƱ,ѧУû
˳澺,Ͷ˭һ!ĳʦ,ͷж, 
Ǽо:Щ, ǻ, ⲻΪҸ, 
ΪѧУΪǡڽ;绰ѧУί,ί
ʽ, ƼҼλ᳤Ѵ˵, ȡ
˴:ҿѧУίƼ, ǡУ, Ҳ
ʸ񵱻᳤, ҲҪ֧, Ϊϸѧļλһ, 
У档Ǹԭ⡣ҲҪͿСо,ҲҪ
ˡ, һԵ,ڻɻۡ

, ͶƱ, ǱΪǷͷ˵, ϵƱԴӦ⡣˭
֪, ƴѧļλҲ,ҹҲúܳɫһ,
,˳ҪֹͣͶƱ,վСͻ䡣ԭδ
μλġ, һλ¸صǰ, ֪˭ͻȻᵽ˻᳡, 
˻һǡµضȫ˵:ͬ־, 
ͷһھô, 벻ô, ״̰,
,ֵйѧᡢ˾,˸浽ί, Ϊ˵
᳤, ?ڲì,õַ,ǶԵжַ, 
Ƕ̫Ϥ, ǽǰ¹,ڲì,ҡ˾,
ҵռʱù,ȰǲҪá˾Ȼ,Ҳһ,
˶?? Խ˵Խ,̨Ͽ,:
뵱᳤һмλ?13 λ?ҽ13 ᳤,е᳤,ǿô
?ҵȻ֪ڽ, ô, Ϊϯ
оȻ޷ˡһĴ, ԹƷʽѡ4 
᳤, ϱһ, һìܽĴ,Լȥȥ
4᳤,λķ

4 ǰ, ֲμѧĳеһᡣ,֪ͨд
ǡڡѧۻᡣ,鲢δ糣
ļ, ˵ûϿɷ2 ᷢʱ,ֻó
ֳɢ,˳ơһƪ¡һλʶϸʦ,Լӡ
ֳĵ᳡; ֻϹһλϽʦɢ,˾
ʱ,ϵϹλϽʦʱ˵,ողμ
һۻ,ʣһЩ,ôɢ,ֻƪ

λʵǻ᳤ѡǰλ᳤,Ӧɱĵλ
˵ΡʦУֹһ, ĳУһ˵᳤,Ȼƽ
,е2,ƶһ³,Իѧ
() ³̵5 Ի:ѧ᳤һ,᳤ˡ

3 , ͶƱѡ᳤ҹһҹ䱳۳, Ϊ˳ѡ
᳤᳤, û뵽·ɱҧ, λվָ³̲,
޸³̡ʲô? »ʱܻ(ǴԱ˰) , 
޸³̡4 翪ʱ,ǲ֪,³ʵֻ޸1 ,5 
ָĳ:᳤ˡϴʱ̵Ĺ淶֮
һ1, ʵֻһҹ, δʵ, 2 ޸ˡѧҡ
ѧɵ,ϦľǷݡ

ݴṤԱ, »ٿʱ,Ĳֹ޸³
, Ҫ³ζֵ⡣᳤ˡ,23 ,Ҳ
ǼʮˡǴҶԡŪʦóɸɡˡڻ,мλ
,˵Լڡ硱,᳤áһ硱¢,ƽ: 
Ϊʲô᳤ܵ, ʸ񵱻᳤, ǵרȱ, ƾʲô᳤
ǵ˵, Ǵλ᳡ĳ, ԱС㶼ľ
, Ϊ淢,Ҫ

,ѡˡλ᳤5 λ,һԭġ˭
ܳǮᡢۻᡣ,ֻ5 ѧĴҹ䱾У;绰
ϵУŵͬ⡰ᡱ,ֻ̾ˡ

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Եġ-ģ͡Ŀ

ʿ

ãڽͨ꣬˵ڳɹ˶
һģеЩɻҲȥISI Web of Science, EI Compendex, Googleѧ
ˡ-ģ͡Zhai-Sun model"Zhan and Sun's Model"
ȡϲǣűģѱƻ
϶ѧƽ̨Ӧҹгٵȹʵȡ
Ч档źǣδѧѧнģΪ
Ĵģ֮һ˵

Ĵ͵ʦ [Zhai WM, Sun X. (1994) A detailed 
model for investigating vertical interactions between railway vehicle 
and track, Vehicle System Dynamics] һг졢·ۺ
ѧģͣɼг϶Ӧ
ΪģͶҹձڵƺģ
Ҳ̫⡣

-ģ͵ĹѧӰȷʵֵɣҹ·
˵ġΪϹҿƼһȽǾͿί۹ˡ

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ӵӿƼѧʿ˵ȥ



ġӿƴ󲻵ҪֳĬһģоѧУ쵼ġǳ
淢չµķǳ˼άǳĵ

ȥṩѧУҳ
http://www.pd.uestc.edu.cn/rsc%5B2k4%5D/news.asp?id=1320
𾪵һ㣺ѧУȻ籩Ĺؼʱ̣ؽ60ٻ
ԺԼ

е£ѧУվҲ·֣ٻԺ
Ժ,ոյѡΪ֧ίԱΪʾ֧֣ѡ֧ίԱʱ
ѧУίֳμѧУ77յۺ գ

˳㿴ѧУոչϽں͸ڵ
http://www.pd.uestc.edu.cn/rsc%5B2k4%5D/news.asp?id=1317
ջ񣡴УڵҪ֮ߣѹڱ廪У´
ĸ߼ְ󣩣ǣЩʿڿgoogle·֣
еб£еѧУĽʦʸҲûдﵽȻҲ
ڡѧУ ǳ

ʵϣӿƴһʮ211985ѧҲ˵
УͲˡǣѧУٷԼٵ̬𾪵ģѧУôһ
Ǽ˵ְʱṩĿгɹ߲ǵ
߲걨ְʱ걨ǲʲôˣ! Ÿ?

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˹̹ʱҵѧ𣿡һĵһ覴

wangyu

Mayfly<˹̹ʱҵѧ> (XYS20060723)
һôһλ

ֵעѾ1904ȱ任˹̹
1905ȻƵѧǰ費ͬɼ֪
£Ӣİԭϵעô˵ģ߲ģҪϾ
ΪʱҵʱоģټϵʱѶԶѡ

Ҳ˵MayflyΪ˹̹Ƕȱ任ģ۵ֵ
ȶ

ʵǣйⷽоᴩʮ꣺1892Ⱦ
ʼо򴩹ֹ̫ЧӦΪ˵˶ѷ-ĪʵĽ
κιԲϵйٶһģ˳ļ˵Ϊ
̫˶壬˶ϵĳˣ1895꣨۷
֮ǰ10꣬ʱ˹̹16꣬ѧûбҵѧ΢֣
ȷ˳׼ȷʽ˶һӣ幫ʽ
룬ײ鵽1899꣬Ⱦ˹ϵ֮
ʱı任⣬óٶйصĽۣȻ1904꣬
ŷǸı任ʽѧӼȳ֮Ϊȱ任Լ
ٶȵĹϵʽָ̫˶ٶȵļޣ
ȵʮоУ˹̹רֹܿ
йصķģMayfly ˵ɼ֪£Ӣİ
ԭϵעô˵ģ߲ģҪϾ˼վסŵġ

෴˹̹ǰ˹Ļϣ˶ѷ-Īʵ顢
任ȵȣ۵2裬ѧ֤ƵĽ
ȱ任һ˹̹ԼҲΪ۵ķˮɵ
飬Ϊ඼ˣֻҪһۼܽᣬ
һǢۣʹ֣ѧҲڣڷ֡

ʵϣȹʽѾǳӽ۵ѧʽˣϧǣ
Ҳΰѧң˼άǱţԼˣûи
ȱ任塣˹̹ȱ任Ļϣܸոµ
壬Ҳǰ˹̹ΰ֮

Ϊȱ任ĹеɣţҲڴ˻
ۡ

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Hbchendlո˱ͣһͱɺˡĻӦ



ã

ǶHbchendlӦǳ塶ո˱ͣһͱ
ˡĻӦָ߿ʵ󵼶ߣҲϣ
ѱǿŵġˣжͼԴһЩ⡣
ţеֻҪʶ򵥵ĽͣҾͻסڸӵ
⣬ȻӦȥרҵסԭĶԡ¡ȱʶҵĻӦԡš
ͷ

¡ոҪ飬ҪﵽˮС10%

šʵϣҵ̶ԭ϶ضҪ󣬽ոѱҲ
⡣ǣ߹ЧʺͲƷƷʣڸϣ
߿ɲԡ⣬ûԸԭеˮּȵ500ȣȻȴ
ӲƷзҪĹҵˮⲻû壬˷Դ
ɸȾ򵥵˵һҵ̵ԭҪԤһ
Ƕȱ㡣һ棬ҲͼҪԭϷ鵽2
¡̱ĻϺʹȴǳԽ鵽6¡12
鵽50¾Ϳˡ

¡Ľո˲50%ҡʵʪս㣬
ȻСöࡣ

ṣ̌ʱˮԭת
ʣڲɷֻ֣Ҫ˳仯ѧת̱Խܸߴ25
ԭˮ֡ͼͬʪոѹȻʡ£
ʵˮֿɴ65Щˮּȵ500ĵ൱
ڰ10-15ԭֵνտˮͨɹȻͿ԰
ˮֽ͵10%ҶҪҵǺֶΪ顣

ռҲȻڸϡΪʵܶȽϵͣ
ʸϵľ뾶 (ETR) ͨ30ʪʱ
ˡ4ˮΪ50ʪϵͬ2ˮ2ˮ
óһˮȻûеġũշ
Ҳ֪ҪȰѲɣοһִҵ̡

ͬʱѧĿ֤ҪЧͳһĺ׼Ϊԭˮ
ǧǾԸΪ׼ˮֶʵͣǳʶֵ
ü֡

¡ġ͡ʯͣҲͲͣǡ͡
͵൱ڡ͡ʯ;ͲԺʣµβͣ
ͲûȣҲǿȼϵġϵĴִͿͣ
糧Ĵ͹¯Ҳȼϡ

šͳƷȻͲ͡Ǵ;
ԭͣҲҪһӹͲͬ͡Ҫнһӹ
߸ֵӦͬն;һ棬ȷʵֱ
̡Ҳһ֮͵
ڡ͡۶ϲ׼ȷ߳˻Բͬ⣬͵һ
ͬ֡Ȼʹ䷢͵ͺܶ࣬
֮תȴһŵ㣬Ϊѧȼ
ϿόԽϺá

¡һ֡͡ĲҲһͣǵڰ͡
׼ȷ˵Ӧ4ָոܲһ͵ĶҺȼϡ

š罫ӸƻȣͱȽϲر塣
һණͷԣȷʵԶͣ͵ĺ
ҲԶںߣĳɱͻߺܶࡣ͵зҲû˵
ָ൱һ͵ͣҲ֪
ʲôرɡпƴзѾͷľݣ
˵ʲôȼϡ

¡͡ĳɷֲ̼⻯Ǽ临ӵĻȻ
ẬһЩ̼⻯Ʋ̫ߡϿǺںճҺ壬
ι϶ǲеġƷӦ൱ͻԵͣȲʯԭ
ͣ˵ɱÿǧԪĿǰֻܵȼʹá

š̼⻯ȻǺܺõȼϣCHO״ҴҲܺð
ȼʱ(PM)͵(NOx)ŷͺܶࡣͣ
Ҳǡ临ӵĻʵϣҲ͵ȷĻ
ѧֹɵݣΪʵ̫ˣغͼڱ仯
͵ĳɷȻҲǸӵġ˵͡ιУԭ
ʯͣιҲУ죬ȾͲֵ
˵ֻܵ͡ȼʹáô;Ͳǵȼʹ𣿵ȼ
ʹñʲôȱ㡣ҿԸظ㣬;Բֻ
ȼʹã໯̵ԭϣҵĳȺܴ
̶ʯ͵ıȼ۾ġ

粿ֶߺһ˵ģͼٺܶսĳЩ
ڵȱͲȷԣЧӦҪоܶ
ҵǰ侲жϡũСֽһϣ
Ⱦʹ񸶳ۡˣұҲͼ
̬ȡȻˮ͡ƭֲͬոѱ͡һȱ
ݵȴֵ̽Դһ༼Ҫѧϵ˼ά
ҲҪĺ⡣ҵĶĲӦΪͼҽ
ϣͨЩۣרҵʿĳʶͲҪĳ̬뿹

Ǿ仰Ҫרҵû㹻רҵ֪ʶǷʱ
ҪѧͿѧһϽҵ߱
Ͻ𡢸س塣֮Ұ

2006-07-24

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