The fact that when you go in a circle, you accelerate is what we're learning here, coming from the fact that velocity is a vector and its change can be due to change in the magnitude or change in direction.

而当你做圆周运动时你也在加速,这是我们在这里所学到的,原因就在于,速度是一个矢量,其变化可以通过改变模长,或者方向来实现

耶鲁公开课 - 基础物理课程节选

But he invokes it to show that if one really reads it carefully enough, one can see that the lesson to be drawn has nothing whatsoever to do with the due and timely investment of one's talent.

他为了证明如果一个人足够认真的读过，他就可以看出其实这个寓言的意义与,准时和适时投资都没有关系。

耶鲁公开课 - 弥尔顿课程节选

Every force, with one exception, can be seen as a force due to direct contact with the body.

除了一个例外,其它所有力必须要和物体有直接接触

耶鲁公开课 - 基础物理课程节选