北京の大気がまたとんでもないことに。0:37----RT @BeijingAir : 02-16-2013 23:00; PM2.5; 259.0; 309; 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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@BeijingAir after Spring Festival holiday, Everything come as usualThanks. Twitter will use this to make your timeline better. UndoUndo
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