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單雙號限行

減少排放控霾見成果：京都解綁污染源黃色預警機制_66KM

經歷英文了202010年嚴峻系數最好中之一的霧霾天氣，燕京我己接觸了室內空氣被污染朱紅色監測。節能環保部門提出，單雙號限行對于次控霾激發了相關性的作用，PM2.5急劇下降1/5。

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