名词
中文翻译：成人
同义词：
['adult', 'mature', 'grown-up']
例句：
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1. He is a grownup now and has to make his own decisions.
他现在是个成年人，必须自己做决定。
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2. She grew up in a small town and loves the simplicity of life there.
她在一个小镇长大，喜欢那里的生活简单。
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3. The old man is a grownup now and can take care of himself.
这位老人现在是个成年人，可以照顾自己了。