Maybe you didn't realize that they are just simultaneous equations that you solve.

也许你并没有意识到,它们其实就是你们平时解的方程组

耶鲁公开课 - 基础物理课程节选

You know I never experienced as much of a final line at all.

其实我并没有感受到,你所说的底线。

普林斯顿公开课 - 国际座谈会课程节选

You're not doing any of it.

其实你什么都没有做。

耶鲁公开课 - 死亡课程节选

If it's going in a circle, you will say from now on, that it, indeed, has an acceleration, even though no one's stepping on the accelerator, of amount v^2 over R.

如果它在一个圆周上运动,你会说从现在起它其实有加速度,即使没有人去踩油门,加速度大小为 v^2 / R

耶鲁公开课 - 基础物理课程节选