The answer is it's confined in temporary cash pools, whether in the Supplementary Financing Account or excess reserve deposits or in time-sensitive T-bills.

答案是它被限制在临时现金池中，无论是在补充资金帐户中亦或是在超额储备存款中亦或在时间敏感的短期国债中。

youdao

If the bank replenishes its vault cash, its account at the ReserveBank is drawn down in exchange for notes issued by the Federal Reserve.

16如果银行补充它的库存现金，它在储备银行那里的账户将被联邦储备券注入。

youdao

Assuming you already have a cash reserve equaling three to six months of living expenses, 'you have to increase the size of that emergency fund to account for all your new costs,' says Mr.

勒舍尔称，假设你已经有了能够保证未来三到六个月生活支出的现金储蓄，你得增加这笔应急资金的数额，使其能够负担所有新的支出。

youdao

Regulators say holding back a small amount of customer cash would decrease the amount of capital that firms would have to hold in reserve and compare the idea to a minimum account balance required by banks.

WSJ: U.S. Sets Money-Market Plan