哈哈哈哈，绝对值和相对值。看你要取哪一个。

来源: itistrue 于 2012-01-05 17:43:14 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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