英语翻译：
【化】 maintenance and overhaul
分词翻译：
保养的英语翻译：
maintain; service; take good care of one's health
【化】 maintaining
【经】 upkeep
与的英语翻译：
and; attend; get along with; give; help; offer; take part in; with
【计】 AND
大修的英语翻译：
heavy repair; overhaul
【计】 major overhaul
【化】 capital repair; general overhaul; heavy repair; major overhaul
major repair; major service; overhauling
【经】 capital repair; maintenance overhaul; major overhaul; major repair
permanent repairs