I want you to take rather than passive notes of writing down what is on the power point or every word that I say.

我不希望你们被动地记录,幻灯片上的内容或者我说的话。

哈佛公开课 - 幸福课课程节选

At any point on the graph you can take the derivative, which will be tangent to the curve at each point, and its numerical value will be what you can call the instantaneous velocity of that point and you can take the derivative over the derivative and call it the acceleration.

在图上的任意一点,你可以进行求导,得到曲线上每一点的切线斜率,所得到的数值,即为该点处的瞬时速度,然后你再求一次导,得出它的加速度

耶鲁公开课 - 基础物理课程节选

Unsurprisingly, you've got the ability to do decent work in this class and most of you have the ability to do good work, and some of you have, a fair chunk of you have, the ability to do excellent work, though it may take some work on your part to get to that point.

不奇怪，你已经有能力去做极好的作业,并且大多人有能力做好作业，一些人有，是大部分人有，有能力去做极好的作业，尽管这需要花费一些功夫才能做到。

耶鲁公开课 - 死亡课程节选