• Pollution is a major health hazard.

    污染健康大敌

    youdao

  • At present a greater hazard to the water body is man-made pollution.

    当前水体危害较大人为污染

    youdao

  • In Mexico city, vehicle pollution is a major health hazard.

    墨西哥城交通污染对人们健康一个主要威胁

    youdao

  • In Mexico city, vehicle pollution is a major health hazard.

    墨西哥城交通污染对人们健康一个主要威胁

    youdao

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