The president said the federal government has already reformed the student loan system and increased tax credits for families struggling to pay college education costs.

VOA: special.2010.08.12

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

Well, we do have a graduated tax system.

嗯，我们有累进税率制度。

扶贫政策 - SpeakingMax英语口语达人

The thing that's really doing the heavy hitting on risk management is really the tax and welfare system.

而税收和福利制度能真正有效地,实现风险管理。

耶鲁公开课 - 金融市场课程节选

Public finance relates to the tax and welfare system that we have.

公共财政学涉及,税收和我们的福利体系。

耶鲁公开课 - 金融市场课程节选