名词
中文翻译：窒息气体
同义词：
['deadly gas', 'poisonous gas']
例句：
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1.The factory was evacuated because of the suffocating gas.
由于窒息气体，工厂被疏散了。
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2.The firefighters were forced to put out the suffocating gas with water.
消防员被迫用水扑灭窒息气体。
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3.The chemical plant released a suffocating gas into the air.
化工厂向空气中释放了窒息气体。