... air pollution index system 空气污染指数制度 air pollution inventory 空气污染资料表；空气污染资料记录 air pollution level 空气污染水平 ...
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这名英国年轻人注意到，接近地面的空气污染水平比该机构所记录的高空空气污染水平高出约三分之二。
The English youngster noticed that pollution levels are around two-thirds higher close to the ground than they are in the air at the height where they are recorded by the agency.
她的监测仪显示，越是接近地面，空气污染水平越高。这凸显了人们的担忧，担心婴儿和幼童患肺部疾病的风险可能会增加。
Her monitor has shown that air pollution levels are higher closer to ground level, which has helped highlight concerns that babies and young kids may be at higher risk of developing lung problems.
德里的空气污染水平已经与北京不相上下。
Delhi already has air pollution levels comparable to Beijing.
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