The theatres were closed on Saturday and Sunday for routine maintenance .
戏院周六和周日关闭进行例行维护。
Engineers are carrying out essential maintenance work on the main line to Cambridge.
机修工正在对通往剑桥的干线进行必要的养护。
n. 维护,维修;保持;[经]生活费用
conservation、
keep
adj. maintainable
n. maintainer
vt. maintain