Half of you did above average on the Midterm; half of you did below average on the Midterm, but if I went up and asked each of you why the answers would not be symmetrical.

你们当中有一半人期中考得比平均分高;,有一半期中考得比平均分低，但如果我去问你们为什么,答案会各有不同呢。

耶鲁公开课 - 心理学导论课程节选

OK, elements with low average valence electron energy, and here I'm saying below 11 electron volts, these are good electron donors.

平均价电子能都较低的元素，我是指那些低于11电子伏的，这些是很好的电子给体。

麻省理工公开课 - 固态化学导论课程节选

Without showing your neighbor what you're doing, put in the box below a whole number between 1 and a 100 We will calculate the average number chosen in the class.

从1到100之间选择一个号码填到,下面的方框内,不要让你同桌看到,我们会计算全班的平均数

耶鲁公开课 - 博弈论课程节选