compulsory
adjective uk/kəmˈpʌl.sər.i/ us/kəmˈpʌl.sɚ.i/
B2 必须做的;强制性的;必修的
If something is compulsory, you must do it because of a rule or law.
Swimming was compulsory at my school. 在我们学校，游泳是必修课。
The law made wearing seat belts in cars compulsory. 坐车系安全带是法律强制规定的。
- More examples
- English is compulsory for all students, but art and music are optional.
- They proposed making secondary education compulsory up to the age of 18.
- He has just finished a stint of compulsory military service.
- Attendance at lectures is compulsory.
- These books are compulsory reading for students of architecture.