445とは。いつも夜中に高いんだよね。
朝には低くなってる。意図的な放出か?
RT @BeijingAir: 12-24-2013 03:00; PM2.5; 417.0; 445; Hazardous (at 24-hour exposure at this level)
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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And it is getting worse ... “
@BeijingAir: 12-24-2013 03:00; PM2.5; 417.0; 445; Hazardous (at 24-hour exposure at this level)”Thanks. Twitter will use this to make your timeline better. UndoUndo
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