勤务的英文：
duty

Administrative services
非战斗性行政勤务;行政勤务部队

The orchardist gave little thought to the logistics of harvesting the crop.
种子园经营者很少考虑到收集种子的勤务工作。

duty to rear; duty to provide support
抚养义务

a truck; a heavy duty truck
载重汽车

The path of duty is the path of safety
尽职的路是安全的路

They never neglect their duties.
他们从未玩忽职守。

You ought to do your duty.
你应该尽到自己的责任。