名词
中文翻译：污染
同义词：
['contamination', 'pollution', 'discoloration']
例句：
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1.The air quality in this area is severely polluted due to heavy industrial emissions.
由于重工业排放，这个地区的空气质量严重恶化。
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2. The factory has been accused of causing serious pollution to the nearby river.
该工厂被控对附近的河流造成严重污染。
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3.The government has introduced stricter regulations to reduce air pollution in the city.
政府已实施更严格的规定以减少城市空气污染。