If you put a property up as collateral, then the lender knows that they can get the money back from you.

如果你以资产作抵押,贷方就知道债务偿还有了保障

耶鲁公开课 - 金融市场课程节选

But you'd like to write your program not in terms of floats and ints and lists, but in terms of mortgages, and CDOs, and all of the objects that you read about in the paper, the types you read about.

但是你可以不基于,浮点型，整型还有链表来进行编程，而是基于一些房贷类，债务抵押债券类来编程,甚至那些你在报纸上看到的类。

麻省理工公开课 - 计算机科学及编程导论课程节选

Mortgages are debts secured by property as collateral.

抵押贷款是以财产作为抵押的债务

耶鲁公开课 - 金融市场课程节选