形容词
中文翻译：Unknown
同义词：
['mandatory', 'compulsory', 'essential', 'indispensable']
例句：
-
1. It is obligatory for all members to attend the meeting.
所有成员都必须参加会议。
-
2. The government has made it mandatory for everyone to wear masks in public places.
政府已规定在公共场所每个人都必须戴口罩。
-
3.This essential oil is known for its healing properties.
这种精油因其治疗性质而闻名。