名词
中文翻译：无
同义词：
['none', 'nobody', 'no one']
例句：
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1. I need a nan to help me with my homework.
我需要一个人帮我做作业。
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2. He is the only nan in the family.
他是家里唯一的人。
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3. The teacher asked us to work together as a team, but there was no nan to join us.
老师让我们作为一个团队工作，但没有人来加入我们。