当我移动我的左腿的时候它很疼。

My left leg hurts when I move it.

youdao

当我移动我的腿，感到疼痛。

It hurts when I try to move my leg.

youdao

我知道当我移动下游和当我移动的上游。

I'm aware of when I'm moving downstream and when I'm moving upstream.

youdao

Anybody have an idea? What's the one function of state? I'm the system, the rest are the surrounding. What's the one function of state that's constant when I'm doing all my chemical reactions to move my arms around?

态函数又是什么呢？,我是一个系统，其余的是周围的环境,那么当我在做所有的化学反应,去四处移动我的手臂的时候,什么量是常数？

麻省理工公开课 - 热力学与动力学课程节选