既然发现旧灯泡灯丝没断，为什么不先放回旧灯泡试试？

来源: TBz 于 2015-08-11 23:44:15 [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.