名词
中文翻译：污染
同义词：
['contamination', 'pollution', 'contamination']
例句：
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1.The factory is causing serious pollution to the river.
这家工厂正严重污染这条河流。
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2.The government has been working hard to reduce air pollution.
政府一直在努力减少空气污染。
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3.We need to take action to prevent further pollution of our environment.
我们需要采取行动，防止进一步污染我们的环境。