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air pollution in China
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air pollution in China
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中国大气污染
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air pollution in China
中国大气污染
由于人类活动或自然过程引起某些物质进入中国区域大气中，呈现出足够的浓度，达到足够的时间，并危害人的舒适、健康、福利和生态环境的现象。
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