名词
中文翻译：Unknown
同义词：
['cleaner', 'cleaner', 'cleaner']
例句：
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1. The bur cleaner was very helpful in cleaning the office.
清洁工在清理办公室时非常有帮助。
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2. The cleaners use a special machine to clean the floors.
清洁工们使用一种特殊的机器来清洁地板。
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3. The cleaners are responsible for maintaining the cleanliness of the building.
清洁工们负责维护建筑物的清洁。