So we are burning up an enormous amount of fuel at every launch just to get the rocket up to what's known as escape velocity.

所以每一次发射我们都要耗费大量的燃料来让火箭达到所谓的“逃逸速度”。

youdao

The motion of a pendulum rocks this device so that it catches and then releases each tooth of the escape wheel, in turn allowing it to turn a precise amount.

钟摆的运动使这个装置晃动，如此一来这个装置能抓住擒纵轮的每一个齿，随后又将其释放，因而使其精确转动一段距离。

youdao

And that's the minimum amount of energy that I would require to get you to infinity and to have you escape the gravitational pull of the Earth.

那是能量的最小值，我会要求你们到无穷，然后让你们由，对地球的引力逃逸。

youdao

The titular glow ball can be skinned with different textures, each one allowing a different amount and hue of illumination to escape to surrounding objects, and is directed around the screen using the accelerometer in your tablet or smartphone.

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The problem becomes less acute once they've cleared the atmosphere, but the high speeds required to escape the Earth's gravitational field (more than 6.8 miles per second) necessitate an enormous amount of energy.

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