中國的霧霾是汽車尾氣造成的。美國現在已經幾乎人手一輛車，還有多大發生霧霾的空間？

來源: 摸黑上網於 2016-12-30 13:30:22 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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