obligatorio 用英语:

Because education is not compulsory in all countries, there are many children who do not attend school.

Attendance is compulsory.

He regards so-called compulsory education as useless.

In Japan, attendance at elementary and junior high school is compulsory.

compulsory military service

He began to resent the compulsory attendance at the boring factory meetings

Do you think P.E. lessons should be optional or compulsory?

The course was compulsory, so John had to take it.

Education is compulsory until 18 or 19 in many countries.

When I was at school it was compulsory to wear school uniforms.

All employers must undergo compulsory drug tests.

I am in favour of compulsory voting.

School uniform is no longer compulsory in many British schools.

My country had a compulsory six-month quarantine period for domestic pets.