名词
中文翻译：Unknown
同义词：
['fan', 'blower', 'aspirator', 'ventilator例句：1. The lower fan is responsible for cooling the room.（较低的风扇负责冷却房间。）']
例句：
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1. The lower fan is responsible for cooling the room.
较低的风扇负责冷却房间。
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2.Lower fans are often used in hospitals to help patients breathe easier.
较低的风扇通常用于医院，帮助病人更容易地呼吸。
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3. The lower fan was designed to improve air circulation in the room.
较低的风扇被设计用来改善房间内的气流。