@BeijingAir Oh My God..
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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Oh, my, not again... RT
@BeijingAir: 12-25-2015 08:00; PM2.5; 604.0; 568; Beyond Index (at 24-hour exposure at this level)Thanks. Twitter will use this to make your timeline better. UndoUndo
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