形容词
中文翻译：必须的
同义词：
['essential', 'compulsory', 'mandatory']
例句：
-
1.It is obligatory for us to follow the rules.
我们遵守规则是必要的。
-
2.The teacher insisted that all students attend the meeting.
老师坚持要求所有学生参加会议。
-
3. The government has made it obligatory for all citizens to vote.
政府已经规定所有公民都必须投票。