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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Imagine that when everybody's born, on their wrist everybody's born with a natural birthmark that indicates the precise year, day, and time in which they're going to die.

假设当大家出生的时候，手腕上都有一个天生的胎记,它预示了哪一年，哪一天，哪个时候你会死去。

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And that may generalize again and it keeps going until you either get back to Adam and Eve, I guess. I don't think they were born in the US as far as I know, or you find somebody who satisfies that definition or you find that none of your parents actually are in that category.

降低到我的父亲或者母亲,是不是天生的美国公民呢,这个问题可以继续向下分解,你甚至可以追溯到亚当和夏娃的时候,据我所知它们并不是出生在美国的,或者你要么找到一个符合定义的人,要么发现你的父母都不满足条件。

麻省理工公开课 - 计算机科学及编程导论课程节选