active service
noun🔊/ˌæktɪv ˈsɜːvɪs/
🔊/ˌæktɪv ˈsɜːrvɪs/
(especially British English) (also active duty especially in North American English)
[uncountable]taking part in military action as a member of the armed forces, especially during a war 现役；（尤指）战时服役 - on active service
troops on active service 现役部队
- on active service