门警

例句：

1. 1. The security guard atthe entrance was very strict with everyone.
   入口处的门卫对每个人都非常严格。
2. 2. The policemanat the gate kept an eye on thecrowd.
   门口的警察一直注视着人群。
3. 3. The doorkeeper checked all visitors before letting them in.
   门卫在让访客进入之前检查了所有人。