"Safety and security of our volunteers is absolutely our top priority and we are continually looking at this topic and I have to say that in the last few years we have done an amazing amount of work to try to improve both our systems to support volunteers, to ensure confidentiality and to strengthen their preparedness and training."

VOA: special.2011.03.28

I do try to start a few minutes late, but I also have to finish a few minutes early so you can go to your next class.

我已经推迟上课好几分钟了,我还得提前下课,好让你们能赶上下一节课

耶鲁公开课 - 基础物理课程节选