你咋不科普一下 Pai = 3.1415926?

來源: 433832795028 於 2011-02-03 11:53:48 [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.