1，2，都在趨近於3，以3為極限。

來源: 不開竅於 2016-04-02 20:05:30 [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.