We said that the difference between deference with an e and differance with an a can't be voiced.

我们说过，一个字母e的迟延,和a的延异之间的差别是无法表达出来的。

耶鲁公开课 - 文学理论导论课程节选

The basic definition-- the expected value of some random variable x--E--I guess I should have said that a random variable is a quantity that takes on value.

最基本的定义,某一个随机变量X的期望值E,我应该提到过,随机变量是一个可以取值的数

耶鲁公开课 - 金融市场课程节选