really? 2 is too little and three is too much. What is it?

來源: bearsback 於 2010-12-29 11:48:57 [] [博客] [舊帖] [給我悄悄話] 閱讀數 : (16 bytes)
回答: 兩本就夠了。 由 戲雨飛鷹 於 2010-12-29 11:00:19

e=2.718...
haha

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