最糟糕的汙染源是家庭燒散煤...？真的？30年前燒散煤的比現在多吧，為什麽那時霧霾沒這麽嚴重呢？是躲貓貓去了？現在才出來？

來源: 共-產-黨於 2015-03-13 16:30:17 [舊帖] [給我悄悄話] 本文已被閱讀：次

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