如果保护这一风险加权等价值所需要的银行资本比重为10 % ， 则银行只需要拿出2,000美元的资本就可以发起这笔贷款，其余198,000美元都是银行借来的。
If the amount of bank capital needed to protect that risk-weighted equivalent is 10%, then the bank requires just $2,000 of its own capital to fund the mortgage, $198,000 of which the bank itself borrows.