一些物体，比如一些旧的太空火箭或卫星碎片，在地球上以非常高的速度运动，速度如此之快，以至于一个非常小的碎片都能破坏重要的卫星或对宇航员造成危险。

Objects, like bits of old space rockets or satellites, move around the planet at very high speeds, so fast that even a very small piece can break important satellites or become dangerous to astronauts.

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如果你能让滚珠，有这么高的速度，这两项就会相等。

If you could give the ball bearing such a high speed, then the two terms are equal.

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它们以如此高的速度奔跑的原因是它们在围栏中受到了折磨。

The reason they run at such high speeds is that they are being tortured in the holding chute.

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And they are in motion and moving at very, very high speed.

它们都在运动,以非常非常高的速度运动。

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