But there were 65 or 70 different countries represented as well as most of the states.

包含了来自65到70个国家以及,来自大部分州的学生。

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who live in different states or different countries,

他们都住在不同的州或国家，

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Other countries have it centralized but in the U.S. it's split up over fifty states.

其他国家均实行国家统一监管,但美国却把监管权分给了各个州

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In fact, you have to put that qualifier on just about anything you say in finance because the tax system is infinitely complex and every country has different taxes, different states have different taxes.

事实上你必须进行改进,不管你是在谈论哪个金融学问题,因为税制太复杂了,每个国家的税制不同,每个联邦州的税制不同

耶鲁公开课 - 金融市场课程节选