That's a very dispersed system but it still works because member banks keep deposits at the Federal Reserve Banks and they're required to keep these deposits.

这是一个非常分散的系统,但是它还是能起到很好的作用因为会员银行,在联邦储备银行里付保证金,并且它们被要求付这些保证金。

耶鲁公开课 - 金融市场课程节选