名词
中文翻译：虚荣心
同义词：
['self-conceit', 'vanity', 'pride', 'presumption', 'conceit']
例句：
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1. She was so vain that she didn't want to share her success with anyone.
她非常自负，不愿意和任何人分享她的成功。
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2. He is full of vanity and thinks he is the best in the world.
他非常自负，认为自己是世界上最好的。
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3. The young girl had a lot of vanity, believing she was beautiful and talented.
这个年轻的女孩有很多虚荣心，认为她自己很漂亮并且很有才华。