风险投资组合中的加权平均偿还期，考虑到所有提前偿付的抵押贷款、卖权和可调整债券。
A weighted average of the maturities of the bonds in a portfolio, taking into account all mortgage prepayments, puts, and adjustable coupons.
抵押品给了投资者购买抵押债权组合的信心，这就是所谓的二次抵押贷款。
The guarantees give investors confidence to buy packages of mortgage debt, known as mortgage-backed securities.
一些大型投资银行和私人股本集团已调拨数百亿美元资金，专门用于收购并重组这些贷款组合。
Large investment Banks and private equity groups have set aside tens of billions of dollars specifically to buy up and restructure the loan portfolios.
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