The worst pollution threat is concentrated in and near large cities.
最严重的污染威胁集中在大城市内或其附近。
Pollution poses a great threat to our existence。
污染对我们的生存造成巨大威胁。
Air pollution represents the biggest threat to the city.
空气污染是这个城市面临的最大威胁。
As far as these mountain villagers are concerned, pollution is not yet a big threat.
就这些山区村民而言，污染目前尚不是一个大威胁。
Pollution % poses a great threat to our existence.
污染对我们的生存造成巨大威胁。 。
Pollution poses a great threat to our existence.
污染对我们的生计构成一大挟制。 。
Pollution poses a great threat to our existence.
环境污染极大的威胁了我们的生存。
Global pollution is a threat to humanity.
全球污染对人类构成威胁。
Pollution poses a great threat to our existence.
大威胁污染对我们的生存造成一大威胁。
Pollution poses a great threat to our existence.
大威胁污染对我们的生存造成一大威胁。
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