在这种反向耦合中，移动板的位置对移动它的力有影响，可以产生变化的复杂运动。

Such a back-coupling, in which the position of the moving plate has an impact on the forces that move it, could produce complicated and varying motions.

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我们弄清楚了月球的复杂运动。

We learned about the complex motion of the moon.

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我们弄清楚了月球的复杂运动。

We learned about the complex motion of the moon .

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Then next week we'll do more complicated problems that involve motion in higher dimensions, how to go to two dimensions or three dimensions.

下周我们将会处理更复杂的问题,包括更高维数的物体运动,如何处理二维以及三维运动

耶鲁公开课 - 基础物理课程节选