霧霾主要是影響呼吸係統，戴口罩就能防。即使有致癌風險，也不會很快體現在人均壽命上。

來源: asiancarp 於 2016-02-09 05:11:50 [舊帖] [給我悄悄話] 本文已被閱讀：次

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