防尘面罩只防尘，空气污染有毒气体照样经过面罩进入脆弱的肺。

来源: tzbcwbc 于 2013-02-05 09:27:39 [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.