名词
中文翻译：循环区域
同义词：
['circulating area', 'recirculation zone']
例句：
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1.The recirculating zone is where the air is reused and recycled.
循环区是空气被再利用和循环的地方。
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2.The recirculating zone helps to reduce energy consumption.
循环区有助于减少能源消耗。
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3. The recirculating zone is designed to improve air quality.
循环区的设计旨在改善空气质量。