名词
中文翻译：卷帘门止动器
同义词：
['roller door lock', 'roller door catch']
例句：
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1.The security guard uses a roller door stop to keep the doors closed.
保安使用卷帘门止动器来保持门关闭。
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2.The new restaurant has installed roller door stops to improve customer experience.
新餐厅安装了卷帘门止动器，以提升顾客体验。
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3. The roller door stop prevents the door from opening unexpectedly.
卷帘门止动器防止门意外打开。