这个，要是背圆周率，也不能随便改数字的。

来源: WQPY 于 2013-08-19 12:57:39 [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.