This spinning motion, at speeds of hundreds of kilometers per second, may cause matter in the disk to take on a spiral shape.

这种以每秒数百公里的速度旋转的运动，可能会使圆盘上的物质呈现出螺旋形状。

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So, what Kepler's second law says is that the motion of planets is, first of all, they move in a plane.

开普勒第二定律说到，首先每个行星的运动都保持在同一平面内。

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Readers could pore over academic papers about the physical properties of buckyballs, but a 16-second animation describes their motion more easily and arguably more thoroughly.

读者们可能在一些学术论文上读到过关于布基球物理特性的描绘，但都不及这16秒的动画来得轻松、真实和彻底。

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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

You see an object in motion, you find a and you give a a certain numerical value, 10 meters per second squared.

你看到一个物体在运动,你会发现它的 a,然后给 a 赋值,10 米每秒平方

耶鲁公开课 - 基础物理课程节选

On June 6, 2011, Respondent filed a second Motion to Compel Joinder of only J.

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At least one and possibly all three defense attorneys filed a second motion seeking documentation.

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The second motion, also agreed, expressed concern over the management's understanding of clinical needs at the hospital.

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