maintenance /ˈmeɪntənəns/ noun Learner's definition of MAINTENANCE
[noncount]
1
: the act of maintaining something or someone维护;维持: such as
a : the act of keeping property or equipment in good condition by making repairs, correcting problems, etc.维护;养护;保养 —
often used before another noun常用于另一名词前 b : the act of causing something to exist or continue without changing维持;保持 c : the act of providing support for someone or something抚养;支持