When you want to push something or someone away.

或者当你不想接近某事或某人的时候，你都可以使用这个句型。

Don't 课堂 - SpeakingMax英语口语达人

But if you push it too far you will anger the gods and something terrible will happen to you.

但是如果过分追名逐利,便会触怒诸神,灾难随即降临

耶鲁公开课 - 古希腊历史简介课程节选

But we all know that the reason things come to a halt when you push them is, there eventually is some friction or drag or something bringing them to rest.

但我们都知道,推完之后会停下来的原因就是,最后还是有某种摩擦或者拖拽,或者别的什么使得物体静止下来

耶鲁公开课 - 基础物理课程节选

Because once you actually push people,to pin them down, what do you mean by it,you end up with something that's either just not true, or not interesting,or not necessary, or not particularly unique to death.

因为你一旦逼问他们这到底是什么含义，得到的东西既不会是真实的，也不会是必要和有趣的，也不会是对于死亡来说独特的。

耶鲁公开课 - 死亡课程节选

Somehow, if you could manufacture a really smooth frictionless surface, that if you took a hockey puck or something and an air cushion and you give it a push, in some idealized world, it'll travel forever.

如果你制造一个绝对光滑无摩擦的表面,然后在上面放个冰球或者别的什么,或者气垫,然后推它一下,在理想条件下,它会永远运动下去

耶鲁公开课 - 基础物理课程节选