我们对住房贷款抵押证券评级标准作出调整，使得这些债券更难获得AAA级评级。

For instance, we have made changes to our criteria for rating mortgage securities so that it will be much more difficult for such a security to receive a triple-A rating.

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我国目前基本具备了建立住房贷款抵押—级市场的可行条件，要建立的住房抵押贷款—级市场有三种方式可以选择。

Nowadays, China has basically had a feasibility of setting up a second - class market of housing credit mortgage, here we' 11 discuss three choices for it.

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