有的灯饰设计，一个坏灯泡造成所有灯都不亮，只好用好灯泡挨个试直至找到坏灯泡换掉。

来源: IEbird 于 2019-12-05 14:20:50 [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.