今日はずっと青空。これが本来の北京晴れ“@BeijingAir: 10-26-2014 21:00; PM2.5; 15.0; 57; Moderate (at 24-hour exposure at this level)”
10-26-2014 21:00; PM2.5; 15.0; 57; Moderate (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 What is the best type of mask to use to protect against the pollution?#ImportantQuestion#ThankYou#ForeignStudentsDontKnowThanks. Twitter will use this to make your timeline better. UndoUndo
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