音标发音英式音标 [ˌnæʃ.ən.əl ˈsɜː.vɪs]美式音标 [ˌnæʃ.ən.əl ˈsɝː.vɪs]英式发音 美式发音 基本解释兵役。同根派生 national service相关词英汉例句Britain no longer has national service.英國已不再實行國民兵役制。national service更多例句英英字典劍橋英英字典 the system in some countries by which young people, especially men, are ordered by law to spend a period of time in the armed forcesnational service剑桥字典national service柯林斯字典