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죬Ӽٵ10^20ӷأըʼʱ
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Ŀǰṹоͬѧɡ֮һ˺ն˹Ϊ
ʵСλܱƣһλй˶ǣΪ޿ɷ֡
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һλеĹˣĴׯںļԲڡҰ
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˵ͳһֽڿлţǣҵ顣

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罫ʲô̽ܣѧһСʱ
ᣡӭԼĩգҵѧˣ֮
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Ǵ⼸εУжϳǷײ˵¼һ
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ӻп˵ļǺСģǲ֪Ҫȶ೤ʱ䡣

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ûж飬֪ЩѧʵˣСɳ


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