"Now of course the Chinese are beginning to lecture us, about how we need to balance our budget, and preserve the value of the dollar and avoid inflation.

VOA: standard.2009.11.10

What this equation merely says is that the present value of your remaining payments is always equal to the mortgage balance.

这个等式说明了,剩余偿还额的现值,就等于抵押贷款的余额

耶鲁公开课 - 金融市场课程节选