And when the system fails, it is my responsibility." President Obama campaigned on a promise of "change we can believe in."

VOA: special.2010.01.23

He tried to intimidate us too much with his promise of impossible grading so that everyone took the class credit/D/fail, when we all probably ended up with As or Bs.

他经常试着吓唬我们,通过他承诺的不可能的分数等级,所以每个人都虔诚的来上课/D/不及格，当我们几乎都已As或Bs结束时。

耶鲁公开课 - 死亡课程节选