Recently, however, there is a bit of a scandal regarding these rating agencies because they gave AAA ratings to some subprime securities.

但是,最近,出现了一点关于评级机构的丑闻,因为他们将一些次级证券评为AAA级

耶鲁公开课 - 金融市场课程节选

Now, part of the problem is that the rating agencies were rating their securities that they were investing in as AAA, in many cases.

同时存在的一个问题是,信用评级机构对他们投资的,大部分债券都给予了AAA的评级

耶鲁公开课 - 金融市场课程节选