资料来源 : WordNet®

in working order
     adj : fit or ready for use or service; "the toaster was still
           functional even after being dropped"; "the lawnmower is
           a bit rusty but still usable"; "an operational
           aircraft"; "the dishwasher is now in working order"
           [syn: {functional}, {usable}, {useable}, {in working
           order(p)}, {operable}, {operational}]