勤務的英文：
duty; service
n. 责任；义务；职责；职务；税
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。
n. 公共服务系统；公共事业机构；政府机构；帮助，效劳
v. 检修，维修；为…提供服务
overhand service
高手发球
take service with
在￥帮佣
express goods service
特快货运业务
We need to have the car serviced.
我们得把车送去检修一下了。
to service treasury Bonds
支付国债利息