名词
中文翻译：废气
同义词：
['waste gas', 'exhaust gas']
例句：
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1.The factory has been releasing a lot of waste air into the atmosphere.
工厂一直在向大气中排放大量的废气。
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2. The car's engine produces a lot of waste air when it runs.
汽车运行时会产生很多废气。
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3.The city is trying to reduce its waste air emissions by implementing stricter regulations.
该市正试图通过实施更严格的规定来减少其废气排放。