名词
中文翻译：必需的
同义词：
['necessary', 'essential', 'imperative', 'obligatory例句：1. The meeting is required to be held at 2 pm.（会议必须在下午2点举行。）']
例句：
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1. The meeting is required to be held at 2 pm.
会议必须在下午2点举行。
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2. It's required that we finish the work before the deadline.
我们必须在截止日期前完成这项工作。
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3.The teacher required us to read the book aloud.
老师要求我们大声朗读这本书。