Knowing how to answer the tough questions from the media, Smith-Valade said,is key.

VOA: standard.2010.02.25

The answer is that simply knowing the particle has an acceleration is not enough to tell you where the particle will be.

答案是这样的,仅仅知道质点的加速度,是不足以告诉你它接下来的运动的

耶鲁公开课 - 基础物理课程节选

So it's worth knowing in a general way what you need to do to earn a good grade in discussion section and here the answer is, perhaps the obvious one, you need to participate.

现在值得让你们知道什么是你们要做的,去得到好的分数在课堂讨论并且答案是，也许最显然的一个是，你需要去参与。

耶鲁公开课 - 死亡课程节选