custodian

n.管理人

保管人；管理员；看门人；守卫；监护人；管家；负责人。

名词；

1、She worked as a custodian at the school for many years.
她在学校担任看门人已经很多年了。
2、The custodian is responsible for maintaining the cleanliness of the building.
保管人负责维护建筑物的清洁工作。