air pollution
US /ˈer pəˌluː.ʃən/
UK /ˈer pəˌluː.ʃən/
1.
空气污染
the presence in or introduction into the air of a substance which has harmful or poisonous effects.
:
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The city is struggling with severe air pollution.
这座城市正面临严重的空气污染。
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Reducing vehicle emissions is key to combating air pollution.
减少车辆排放是防治空气污染的关键。