When you mortgage a property that means that you offer the property as collateral for a loan.

当你通过抵押贷款购买一项财产意味着,你需要抵押这项财产的所有权以获得贷款

耶鲁公开课 - 金融市场课程节选

The subprime mortgage market was bringing people into the mortgage market who in prior decades would not have been involved-- would not have had any mortgage.

次贷抵押信贷市场,把十多年前那些,不能获得抵押贷款的人,带进了抵押信贷市场

耶鲁公开课 - 金融市场课程节选