So, I know this is a simple example and I can see everyone pretty much got it right, and probably those that didn't actually made some sort of clicker error is my guess.

分别是质子和电子,我知道这是个很简单的问题，你们大部分人都做对了,我猜那些没做对的大概是因为点错了。

麻省理工公开课 - 化学原理课程节选

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