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1·Eleven point two kilometers per second, at which satellites can be freed from the gravitation of the earth, is called escape speed.

卫星以11.2千米每秒的速度前进可以脱离地球引力，这被称为“逃逸速度”。

2·One of them is the force of gravitation (地心引力), which tries to pull the satellite towards the earth and is like a rope which keeps the satellite from flying away.

其中一个是地心引力的力量，这股力量试图把卫星拉向地球，就像一根把卫星绑住的绳子，防止卫星飞远了。

3·Where is the gravitation tank?

重力水柜在哪里？

4·This is called gravitation, or gravity.

这叫引力。

5·Finally he found the great gravitation law.

最后他发现了伟大的引力定律。

6·Planetary motion is also a result of gravitation.

行星的运动也是引力的结果。

7·Everybody knows that. It's the property of gravitation.

这就是万有引力的性质，我们都很了解了。

8·In the dead body, only gravitation ACTS on the blood.

死去的身体里，血管里只有重力的作用。

9·A body that has very little matter has very little gravitation.

一个天体所含的物质很少，它的引力也很小。

10·Newton's law of universal gravitation has been extremely useful.

牛顿的万有引力定律是极其有用的。

(1)universal gravitation万有引力