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The combination of air pollution and exercise increases the potential problems.
空气污染和运动锻炼加重了潜在的问题。
youdao
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It is a kind of pollution sources, and a kind of potential resource.
它既是一种污染源，又是一种潜在的资源。
youdao
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It is a kind of pollution sources, and a kind of potential resource.
它既是一种污染源，又是一种潜在的资源。
youdao