janitor

n.

看门人；看管房屋的人；锅炉工；

复数：janitors

1. He is a school janitor.
   他是学校的门卫。
2. The janitor did not find anything unusual.
   看门人没有发现任何异常。
3. The janitor is very conscientious.
   那个管理员很认真。
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。

Janitor tweezers
The jumpy janitor. Letter to an ethicist.
Justice for Janitors in Los Angeles: Lessons from Three Rounds of Negotiations
For Big-Data Scientists, 'Janitor Work' Is Key Hurdle to Insights
Janitor fish Pterygoplichthys disjunctivus in the Agusan Marsh: a threat to freshwater biodiversity
What did the janitor do? Suggestive interviewing and the accuracy of children's accounts.
Helots No More: A Case Study of the Justice for Janitors Campaign in Los Angeles
The Technology Coordinator: Curriculum Leader or Electronic Janitor?.
Simple Tools for Examining and Cleaning Dirty Data [R package janitor version 1.0.0]
DOES OUTSOURCING REDUCE WAGES IN THE LOW-WAGE SERVICE OCCUPATIONS? EVIDENCE FROM JANITORS AND GUARDS