The reserves are an accounting entry-- it's how much they are required to hold, but the companies will hold more than that, typically, in order to protect themselves-- more than is required--and their policy holders-- more than is required by the regulators.

提取准备金就要做会计分录,由相关部门的规定,来提存一定量的准备金,但是保险公司可以持有更多的准备金,通常,多提存是为了,保护他们自己以及投保人,于是持有更多准备金

耶鲁公开课 - 金融市场课程节选

It used to be that the government didn't let banks pay more than a certain amount on their deposits and that helped protect banks because then they didn't have to compete to pay high interest rates -then be incentivized to make risky loans to try to make money with those high interest rates.

在这之前,政府不允许银行对存款,支付超过一定数量的利息,那样做是为了保护银行,因此他们不必争相,去支付高额利率...,因为在高利率支付下银行会倾向于,发放高危贷款以获取利润

耶鲁公开课 - 金融市场课程节选