英 [sɪˌlektɪv ˈsɜːvɪs]
征兵制度：美国的一种制度，要求年龄在18至26岁之间的男性将自己的姓名登记在官方名单上，以便在战争时被征召入伍。
selective service //
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
an independent federal agency that administers compulsory military service
同义词： Selective Service System / SSS
compulsory military service
同义词： conscription / muster / draft
他之后虽然也登记服义务兵役(Selective Service)，但从此未再被征召。
如果我疏忽未做兵役注册（selective service），是否会影响3年后的入籍申请？有没有办法证明，我没有注册是因为我非法、疏忽、不知道？
... selective service 义务兵役制 selective focus 选择聚焦 selective fading 选择性衰落 ...
第六，如果绿卡持卡人是18到25岁的男性，必须到美国兵役登记局(Selective Service)进行兵役服务登记。不登记者，有可能影响将来入籍申请。
When must all men register for the Selective Service?
所有男性到了哪个年龄必须注册“兵役登记”？
When must all males register for the Selective Service?
所有男性必须在什么时候办理兵役登记？
Just recently we have collected evidence of falsification by Obama on his Selective Service Application.
最近我们搜集到证据证明奥巴马在选择应用服务上做过伪造。
The chief function of selective service at the moment is to require 18-year-olds to register.
All men between ages of 18 and 26 are already required to register for the draft with the Selective Service System.
To verify male Job Corps applicants compliance with Selective Service registration requirements.