1.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.
compulsorily Five of the company's senior managers have been made compulsorily redundant. 公司的高级经理中有5位已经被强制性地裁掉。
英英释义
1.required by rule
e.g. in most schools physical education is compulsory attendance is mandatory required reading
