ac·tive du·ty
noun/ˌæktɪv ˈdjuːti/
/ˌæktɪv ˈduːti/
(especially North American English) (also active service especially in British English)
[uncountable]- taking part in military action as a member of the armed forces
现役：以武装部队成员的身份参加军事行动 - He has been treated in hospital and is returning to active duty.
他已在医院接受治疗，并正在返回现役。 - on active duty He sustained serious injuries while on active duty.
他在执行任务时受了重伤。
- He has been treated in hospital and is returning to active duty.