If you're born in the United States you are by definition a natural born US citizen.

如果你出生在美国,那么你就是一个天生的美国人。

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This helps us to explain, for instance, why in so many cultures the concept of saving face is so important, even if to most modern Americans it seems relatively trivial.

这就很容易解释，为什么很多文化里的面子问题,会变得那么重要，而对许多美国人来说,那都是小事一桩。

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