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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How do you know that your parents, at least one of your parents satisfies the definition? Well I've reduced the problem from am I a natural born US citizen to is one of my parents a natural born US citizen?

这是一个递归的定义，你怎么知道你的父母,至少其中一个是满足天生的美国公民,这个定义的呢？,我已经把我是一个天生的美国公民这个问题？

麻省理工公开课 - 计算机科学及编程导论课程节选

Each of you, who is above 18 and is an American citizen, and was born in America above whatever it is, whatever the rule is, whatever the Constitution says), each of you can potentially stand up now and say you're going to run for president.

你们中每一个到了18岁的美国公民,并生在美国,大于不论几岁,不论规定是多少,不论宪法怎么规定,你们都可以站出来,参加总统竞选

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Now if you were not born in the United States, you may still be, under definition, a natural born US citizen if you're born outside this United States, both of your parents are citizens of the United States and at least one parent has lived in the United States.

现在如果你不是出生在美国，你可能,即使你出生在美国以外的地方,只要你的父母都是美国公民,而且至少一个居住在美国,那么按照定义。

麻省理工公开课 - 计算机科学及编程导论课程节选