名词
中文翻译：循环区域
同义词：
['recirculation area', 'recirculation zone', 'recirculation area']
例句：
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1. The new air-conditioning system has a recirculation zone that can reduce energy consumption by up to 30%.
新的空调系统有一个可以降低能耗高达30%的循环区域。
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2. In the recirculation zone, the waste gas is mixed with fresh air before being released into the environment.
在循环区域内，废气与新鲜空气混合后才能排放到环境中。
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3. The recirculation zone helps to maintain a stable temperature and humidity in the room.
循环区域有助于保持房间内的温度和湿度稳定。