You simply want to describe things the way they are and then dynamics tells you how they changed and why they changed.

你只是单纯描述物体的实际状态,而动力学则是解释它们运动的方式和原因的

耶鲁公开课 - 基础物理课程节选

Can you explain what intramural sports are?

你能解释一下什么是内部体育运动吗？

伯克利的水上运动 - SpeakingMax英语口语达人

That is why we don't worry about the motion of the nucleus 1 because the ratio of mass is about 2,000 to one.

这就解释了为什么我们不担心,原子核运动起来,因为原子核和电子的质量比约为2000：

麻省理工公开课 - 固态化学导论课程节选

So, I'm going to illustrate the idea of kinematics by taking the simplest possible example.

所以我会用很简单的例子,来解释运动学

耶鲁公开课 - 基础物理课程节选

There had better be something that explains, that's controlling, the motions of the missile.

最好存在某种东西可以解释,是什么控制着导弹的运动

耶鲁公开课 - 死亡课程节选

From one point of view, reading Hobbes, his account of the state of nature seems to derive from his physics of motion and rest, in the opening chapters of Leviathan.

一方面，阅读霍布斯，他关于自然状态的解释似乎,来源于他关于运动和静止的物理学，这也在《利维坦》的开篇章节。

耶鲁公开课 - 政治哲学导论课程节选