啥呀，你學得太淺，隻知道美國高中生AP科得那些內容，還談不上大學數學，哈哈哈

來源: 用戶名被占用了於 2013-01-28 13:52:24 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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