By contrast, Mr.Bernanke proposed various ways to fence off the troubled assets, from nonperforming loans to mortgage-backed securities that investors had stopped buying at almost any price.

• 相比之下，博南克提出了各种“剥离问题资产“的方法，这些问题资产包从不良贷款到住房抵押贷款证券，是人们不会在任何价格购买的。