形容词
中文翻译：必须的
同义词：
['compulsory', "compulsory例句：1. The teacher madeit obligatory for us to finishthe work before class.（老师要求我们在课前完成作业。）2. He felt a sense ofobligation to help his friend out.（他感到有义务帮助朋友。）3. It's obligatory that we all participate in themeeting.（我们都必须参加这次会议。）"]
例句：
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1. The teacher madeit obligatory for us to finishthe work before class.
老师要求我们在课前完成作业。
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2. He felt a sense ofobligation to help his friend out.
他感到有义务帮助朋友。
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3. It's obligatory that we all participate in themeeting.
我们都必须参加这次会议。