虽然知道一直满严重。
•
扫个小盲: 这是因为在特定气候条件下,地面和高空气流的对流停滞,污染无法被稀释,污染逐日累计,病入膏肓。
-xiaohu-
♂
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01/13/2013 postreply
22:12:11
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