"I have been up on Obama for a long time. People in Chicago have been knowing Obama for the longest time, because him and his wife had been doing a lot of good things, trying to help out the neighborhoods."

VOA: standard.2010.02.24

So it is my promise to you and it is the huge staff's promise to you that we will absolutely get you through this course and you will have a good time doing so.

所以我对你们承诺，也是所有教员的承诺：,你们绝对能够通过这门课程,并且在课程中度过一个愉快的时光。

哈佛公开课 - 计算机科学课程节选