Introvert and extrovert are the two basic personality types according to the theories of the 20th-century Swiss psychiatrist Carl Jung.

根据20世纪瑞士精神病学家卡尔•荣格的理论，内向者和外向者是两种基本的性格类型。

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Introvert and extrovert are two commonly used words to describe a person's personality. And they are also commonly misused and misunderstood.

内向和外向是用于形容一个人的个性的两个常用的词。它们也经常被滥用和误解。

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And some looked at personality: Are you an extrovert or an introvert?

还有一些则涉及个性： 你的性格内向还是外向？

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The terms extrovert and introvert are well known in business.

FORBES: Introverts No Longer the Quiet Followers of Extroverts

Meanwhile the Guardian's Jon Ronson is bemused that after concluding his whole family are ambiverts - which Cain defines as a mixture of extrovert and introvert - the group barely gets a mention in the book.

BBC: Do we really give introverts a hard time?