就像看一個運動著的人,精確測出某個時刻胳膊和大腿的夾角到0.00001度又有什麽意義呢?

來源: auroraA 於 2014-07-18 23:00:16 [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.