动词
中文翻译：需要
同义词：
['necessary', 'essential', 'vital', 'indispensable']
例句：
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1. The teacher requiredus to complete the homework before class.
老师要求我们在课前完成作业。
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2.The meeting was required for all team members to attend.
会议是所有团队成员必须参加的。
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3.The new policy is required for all employees to follow.
新政策要求所有员工遵守。