youdao

Indeed, on the atomic scale, perpetual motion is a reality.

的确，从原子尺度看，永恒的运动是一个确实存在的事实。

youdao

So, what that means concretely is if you have a force field that conservative, then you cannot build somehow some perpetual motion out of it.

具体来讲，如果你有一个保守力场，就不可能建立起永恒的运动。

youdao

That would that would give rise to a perpetual motion machine, breaking of the second law. It can't happen.

否则就会使,得永动机出现，打破第二定律那是不可能的。

麻省理工公开课 - 热力学与动力学课程节选

The same journalists who laugh at the idea of perpetual motion embrace the voodoo of perpetual prosperity.

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Unassuming in wrinkled khakis and a polo shirt, he is in near perpetual motion.

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As a kid trying to play with the perpetual motion machines, how could you create one.

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