compulsory /kəmˈpʌlsəri/ adj. 必须做的，强制性的，(学科)必修的：nine-year compulsory school 九年义务教育；compulsory service men 义务兵; a compulsory subject 必修课［考句］In Scotland, as in the rest of the United Kingdom, compulsory schooling begins at age 5 and ends at age 16.与英国的其它地区一样，苏格兰的义务教育从5岁开始，16岁结束。［考句］They have done away with compulsory Latin for university entrance at Harvard.进入哈佛大学必须考拉丁文的规定被他们取消了。