selective record service选题服务
selective abstract service定题文摘服务
Register for Selective Service兵役登记
Selective Service System选征兵役制;义务兵役制;制度;征兵局
selective service administration选择性的服务管理
Selective Service Board兵役局
selective service law选征兵役法
selective service registration form义务兵登记表
selective service act选征兵役法
N-UNCOUNT（不可数名词） In the United States, selective service is a system of selecting and ordering young men to serve in the armed forces for a limited period of time. (美国的)义务兵役