1.
it was a miracle that he survived the drop from that height.
地球引力引起了苹果的下落。
2.
Even though the moon's gravity is not so strong as the earth's, it does something to the earth.
尽管月球引力不如地球引力那么大，但对地球仍有影响。
3.
A rock falling to the ground is an illustration of gravity.
石块落地是地球引力的一个实例。
4.
A rock falling to the grind be an illustration of gravity
石块落地是地球引力的一个实例
5.
As an object gets away from the earth, the strength of the pull weakens.
当一个物体离开地球时，地球引力的强度就减弱。
6.
a free and rapid descent by the force of gravity.
由于地球引力的作用而引起的自由、快速的下降。
7.
In outer space the pull of the earth's gravity is weakened.
在外层空间，地球引力削弱。
8.
an instrument for measuring variations in the gravitational field of the earth.
测量地球引力场变化的仪器。
9.
Skylab was beyond the reach of Earth's gravity.
天空实验室超出了地球引力的范围。
10.
uses centrifugal force to separate particles from a suspension.
用地球引力强行分离悬浮粒子的设备。
11.
he made an important math discovery--the universal law of gravitation.
他发现了伟大的地球引力定律。
12.
What is the force of gravity at sea level?
海平面的地球引力为多大?
13.
I was keen to experience the excitement of defying gravity.
我渴望体验对抗地球引力的快感。
14.
The gravity of the earth is about six times as great as that of the moon.
地球的引力大约是月球引力的六倍。
15.
The moon's gravity pulls the waters of the earth into a bulge.
月球引力吸引地球上的水，形成涨潮。
16.
The attraction of the earth for other bodies is called the force of gravity.
地球对其它物体的吸引称为地心引力。
17.
The earth gravitates toward the sun.
地球 (由于引力而) 向太阳移动 [地球受太阳吸引] 。
18.
The earth is pulled towards the sun by the force of gravity.
太阳靠引力作用把地球吸引着。