hardworking; diligent

hardworking; industrious; diligent

diligent; hardworking

service; duties; an orderly (military)

hardworking and frugal

special duty (e.g. extra security or traffic control on special occasions); person on special duty

work done in the field (rather than in the office or at the headquarters); fieldwork; field personnel; fieldworker

to be on duty (of a security guard etc)

to go to work; to be present (at work, school etc); to be away on business

variant of 執勤|执勤[zhi2 qin2]