Nonscheduled maintenance
[计] 非预定的维修时间
🧩 词语组成解析
a. 不定期的, 不按计划的
🗣️ 情景例句
Do what you are told.
叫你怎么做，你就怎么做。
Be careful whom you appoint to the position of manager.
你该当心你所任命的那个经理。
and since most medical men in the Health Services are overworked and have little time for offering time-consuming and little-appreciated advice on such subjects as diet,
因为卫生部门的大多数医生都超负荷工作，所以没有多少时间提出一些既费时而又不受人欢迎的忠告，如注意饮食、