“@BeijingAir: 08-25-2013 22:00; PM2.5; 50.0; 137; Unhealthy for Sensitive Groups (at 24-hour exposure at this level)”遷都だろうね。大気汚染に土壌、水質汚染。
08-25-2013 22:00; PM2.5; 50.0; 137; Unhealthy for Sensitive Groups (at 24-hour exposure at this level)
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