compulsory

adj

1. required by rule

e.g. in most schools physical education is compulsory
attendance is mandatory
required reading

Synonym: mandatoryrequired

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.

e.g. In East Germany learning Russian was compulsory...
在东德，俄语是必修课。
e.g. Many young men are trying to get away from compulsory military conscription.
很多年轻人试图逃避强制征兵的政策。

1. 必修：在三十个学分中,十六个为必修(compulsory)学分,属于基础教育,一般建议最好在第九班至第十一班内完成必修课程(英文科除外). 另外十四个则为选修(selective)学分,为学生升学及就业做准备. 因此,学生进入十一班后,便应该根据志向、兴趣选科,