喝粥下流，必经食管。食管是圆的，π 的精神无处不在。

来源: 无牙于 2010-12-08 07:44:48 [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.