And bathing inside the inner ear fluids where they become stimulated by sound waves and acceleration forces.

毛细胞悬浮在内耳液中,接受声波和其它外力的刺激。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

Strong bonds means the material will resist and applied force.

强键意味着,材料能够承受外力。

麻省理工公开课 - 固态化学导论课程节选

But if you don't do anything, things stay.

如果不施加外力,物体保持静止

耶鲁公开课 - 基础物理课程节选

And fairly soon into the conversation I demonstrated some principle that you've probably learned in your physics class having to do with an object at rest remaining at rest unless acted upon by a force.

很快，在交谈中,我就展示了一些原理,可能你们在物理课上学过,要使静止的物体保持静止,必须有外力作用。

耶鲁公开课 - 心理学导论课程节选

They don't need your help to do that.

不需要任何外力作用

耶鲁公开课 - 基础物理课程节选

Because we find in that plane, when objects are left at what you think is at rest with no external agency acting on them, they all slide backwards towards the rear end of the plane.

因为我们发现,在飞机上,当物体掉在地上,你认为它不受外力作用,应该保持静止时,它却朝着飞机的尾部滚去

耶鲁公开课 - 基础物理课程节选

The Law of Inertia says that, "If a body has no forces acting on it, then it will remain at rest if it was at rest to begin with, or if it had a velocity to begin with, it will maintain that velocity."

惯性定律就是,"如果一个物体不受外力作用,那么静止的物体依然保持静止,如果物体有个初速度,那么就保持此速度不变"

耶鲁公开课 - 基础物理课程节选

What makes the law surprising is that if I only gave you half the law, namely every body will remain at rest if it's not acted upon by a force, you will say, "That's fine. I accept that, because here's something, you leave it there, it doesn't move.

这条定律妙就妙在,如果只看定律的前半段,即,如果物体不受外力作用,将保持静止状态,你肯定会觉得,"这没什么,我能理解,因为你把一个物体放在那里,自己肯定不会动

耶鲁公开课 - 基础物理课程节选

But then you can trace it to some external forces, which are carrying your iPod.

过一会儿你就能发现一些外力的作用,也就是有人把你的 iPod 拿走了

耶鲁公开课 - 基础物理课程节选