名词
中文翻译：清洁的火
同义词：
['clean fire', 'clean-burning fire例句：1. The cleaning crew was hard at work to make the room look spotless.（清洁工人们正在努力使房间看起来一尘不染。）']
例句：
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1. The cleaning crew was hard at work to make the room look spotless.
清洁工人们正在努力使房间看起来一尘不染。
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2.The cleaning fire was extinguished by the firefighters.
消防员扑灭了清洁火。
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3. The cleaning fire was a major source of pollution in the area.
清洁火是该地区的主要污染源。