If nothing is touching the body, there are no forces on it, with one exception which is, of course, gravity.

如果没有实体接触,那么它就不受作用力,当然一个例外那就是引力

耶鲁公开课 - 基础物理课程节选

So, that was one of the biggest, one of the biggest, uh, forces for change. It was my experience living in Italy.

可以说，我在意大利的经历是促成我人生转折点的重大因素之一。

换专业的理由 - SpeakingMax英语口语达人

One of the advantages of an evolutionary perspective on the mind is that it forces us to look scientifically at what we would otherwise take for granted.

优势之一,从进化角度看心理,迫使我们从科学角度,看待我们认为理所当然的东西。

耶鲁公开课 - 心理学导论课程节选

We'll revert especially to the notion of "pushing" in other contexts later in the course, but for the moment you can see the way in which there is a tension between that which pulls and that which pushes which is one of the motive forces of the story.

以后我们会在,其他作品中回归“推“的本意，但是现在我们能看得出来,在推和拉之间有一种张力,这也是整个故事发展的动力之一。

耶鲁公开课 - 文学理论导论课程节选