n.门卫；门警；管理员
He is a school janitor. 他是学校的门卫。
The janitor did not find anything unusual. 看门人没有发现任何异常。
The janitor is very conscientious. 那个管理员很认真。
That janitor is a snail who never gets things done. 那个照管房屋的人动作慢吞吞的,什么事也做不成。
