名词
中文翻译：入口警卫
同义词：
['access control', 'security personnel', 'security guards']
例句：
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1. The new security system requires entry guards to be trained in first aid.
新的安全系统要求入口警卫接受急救培训。
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2.The police station has a team of entry guards to monitor the public's movement.
警察局有一支团队负责监控公众的移动情况。
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3.The hotel had entry guards posted at the entrance to prevent unauthorized access.
酒店在入口处设置了保安，以防止未经授权的进入。