妙，不过圆心上可以放无数个更小更小的硬币 ^^

来源: aqua_kid 于 2009-01-28 11:42:40 [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.