ADJ 强制性的;强迫的;义务的 If something is compulsory, you must do it or accept it, because it is the law or because someone in a position of authority says you must. 强制性的;强迫的;义务的
In East Germany learning Russian was compulsory.
在东德,俄语是必修课。
Many young men are trying to get away from compulsory military conscription.