1580s, "an usher in a school," later "doorkeeper" (1620s), from Latin ianitor "doorkeeper, porter," from ianua "door, entrance, gate," from ianus "arched passageway, arcade" (see Janus) + agent suffix -tor. Meaning "caretaker of a building" first recorded 1708.
权威例句
1. The janitor comes round to turn the lights out.
看门人巡视一圈,把灯熄灭。
2. The janitor let off some steam because the pressure was too high.
锅炉工把蒸汽放走了一点,因为压力过高.
3. I'll just play until the janitor comes round to turn the lights out.
我会一直玩到门房过来熄灯。
4. 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.
5. Art recruited a janitor, we're paying him to keep watch.