通常是几B的铅笔？ 2B？

来源: 思如昀于 2012-04-08 20:05:24 [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.