被质疑的工具是合成型抵押债务债券（CDO），由高盛设计和营销。 该债券的表现与住房抵押贷款支持证券（residential MBS）相关。

The instrument in question, structured and marketed by Goldman, was a synthetic collateralised debt obligation (CDO), whose performance was tied to that of residential mortgage-backed securities.

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