工作

work; labor; perform; function; operate; serve; tenant; job; operation; employment; task; vocation; occupation; profession; assignment; undertaking; gig; dinkum; yakka; working; operational; functional; operating; occupational; on

落后

backward; underdeveloped; primitive; benighted; backward-looking; trail; lag; straggle; drop behind; drop back; leave behind; lag behind; fall behind; down; behind; behind the times; out of date