[] () the role of a country's central bank when it lends money in a time of great difficulty to a bank that does not have enough to cover what its customers are taking out and cannot borrow money from anywhere else最后贷款银行，最后贷款人（一国中央银行的职能。当其他银行无足够的钱应付顾客的提款及无处可借时，中央银行会向这些银行提供贷款）