And some lower-paying jobs require only two years of college, or even a technical education program in high school.

VOA: special.2009.10.15

I'm guessing the average number in the class now is probably about 3 or 4, maybe even lower.

我猜这次的平均数字大约在3或者4,甚至可能更低

耶鲁公开课 - 博弈论课程节选