national service
noun [ U ] uk/ˌnæʃ.ən.əl ˈsɜː.vɪs/ us/ˌnæʃ.ən.əl ˈsɝː.vɪs/
兵役
the system in some countries by which young people, especially men, are ordered by law to spend a period of time in the armed forces
In some countries, everyone does two years' national service after leaving school. 在有些国家，所有人离开学校后都要服两年兵役。
In Britain, national service was abolished in 1962. 英国在1962年废除了兵役制。
Compare: selective service