名词短语
中文翻译：旋转门
同义词：
['旋转门，旋转门式垃圾处理器，旋转门式垃圾收集器']
例句：
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1.The whirlgate dirt trap is a common problem in many cities.
旋转门垃圾陷阱是许多城市中常见的问题。
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2. The whirlgate dirt trap is designed to prevent litter from entering the building.
旋转门垃圾陷阱设计用来防止垃圾进入建筑物。
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3. The whirlgate dirt trap has been improved to reduce the amount of waste that enters the environment.
旋转门垃圾陷阱已经改进，以减少进入环境的废物量。