In America,the traditional way to finance a home purchase is with a thirty-year, fixed-rate mortgage loan.

VOA: special.2011.01.24

Adjustable rate mortgages have a long term -they might last for thirty years -but the interest rate is not fixed for the whole thirty years.

可调利率抵押贷款的期限很长,也许会长达30年,但是利率在30年间并不是固定的

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