名词
中文翻译：看守人
同义词：
['guardian', 'watchman']
例句：
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1. The gatekeeper at the school gate was a friendly face to all visitors.
学校门口的看门人对所有访客都是友好的面孔。
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2. The gatekeeper had to check everyone's ID before letting them in.
看门人必须在让每个人进入前检查他们的身份证。
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3. The gatekeeper kept an eye on the security cameras to ensure no one was trespassing.
看门人一直盯着安全摄像头，确保没有人擅自闯入。