不刮風的結果~~ RT @BeijingAir: 04-11-2013 12:00 to 04-12-2013 11:59; PM2.5 24hr avg; 39.2; 107; Unhealthy for Sensitive Groups
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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@BeijingAir the pollution is from ground. To have a clean air, need start from groundThanks. Twitter will use this to make your timeline better. UndoUndo
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