That's a lot less than the amount of money out there but they always had fractional reserve of banking anyway.

这比流通的金钱少的多,但是他们总是有部分准备金银行制度。

耶鲁公开课 - 金融市场课程节选

Moreover they can also borrow from the Federal Reserve Banks when they're in trouble and need money and that's supposed to help prevent banking crises.

更多的是，当它们陷入困境,需要钱时可以,从联邦储备银行那里借钱,这样可以帮助阻止银行业危机的产生。

耶鲁公开课 - 金融市场课程节选