There, Newton doesn't tell you what forces are going to be acting on a body in a given situation.

在式子里,牛顿没有告诉你,在给定条件下,有哪些力,作用在物体上

耶鲁公开课 - 基础物理课程节选

And the reason for this, and this is a very important point about the photoelectric effect, and the point here is that the electrons here are acting as particles, you can't just add those energies together.

这个现象的原因是，这是光电效应非常重要的一个论点,这个论点就是电子,在这里是粒子行为，你不能仅仅把这些能量加在一起。

麻省理工公开课 - 化学原理课程节选

He's the most connected actor in the history of acting because it isn't that he's been in more movies than everybody else.

他是演艺界有史以来连接性最强的人,并不是因为他演的电影比别人多。

耶鲁公开课 - 心理学导论课程节选

It looks like a tautology because you're never able to show me something that moves forever at a constant velocity, because every time you don't find such a thing, I give an excuse, namely, a force is acting.

这听上去像个死循环,因为你不可能,找到永远匀速运动下去的物体,因为每当你找不到这样的物体时,我就会给出一个理由,也就是,有力作用在上面

耶鲁公开课 - 基础物理课程节选