名词
中文翻译：污染层
同义词：
['pollutant layer', 'contaminated layer']
例句：
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1.The pollution layer is a significant factor in the degradation of the environment.
污染层是环境退化的一个重要因素。
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2. The contaminated layer poses a serious threat to human health.
受污染的层次对人类健康构成严重威胁。
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3.The removal of the pollution layer has greatly improved the air quality.
去除污染层大大提高了空气质量。