1.
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。
2.
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。
3.
the gravity gradient of the moon causes the ocean tides on Earth.
月球引力导致了地球上的海洋潮汐。
4.
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。
5.
The tides are caused by the attraction of the moon for the earth.
潮汐是由月亮对地球的引力引起的。
6.
The moon's grip on objects is not as strong as earth's.
月球对物体的引力，不象地球的强大。
7.
Ocean tides are set up by the pull between the earth and the moon.
海潮是由地球与月球之间的引力所引起的。
8.
In the same way there exists a pull between the earth and the moon.
同样，地球与月亮之间也存在着牵引力。
9.
The lunar gravity is about one-sixth that on earth.
月亮的引力大约为地球的六分之一。
10.
The moon's pull affects the tides on earth.
月亮的引力影响地球上的潮汐。
11.
Simulation of Traction Ability of Lunar Rover with Different Mechanics of Lunar Soil
月壤力学性质对月球车牵引性能影响的模拟
12.
Solar perturbation of the lunar orbit.
出差由于太阳引力引起的月球轨道运动的摄动
13.
As the moon's gravity is only about 1/6 the gravity of the earth, a 200-pound man weighs only 33 pounds on the moon.
由于月球的引力只有地球引力的六分之一，所以一个体重200磅的人在月球上仅有33磅重。
14.
The moon attracts the earth's seas towards her.
月球吸引地球上的海洋。
15.
The moon gravitates to the earth, but is held in its path by opposing forces from other bodies in space.
月球为地球所吸引，但由于宇宙空间中其他天体相反的引力，月球保持了固定的轨道。
16.
When there is a new moon, the moon is situated between the earth and the sun so the attraction of the sun and the moon reinforce each other.
出现新月时，月球位于地球与太阳之间，因此太阳和月球的吸引力互相增强。
17.
Moon's weak gravity let the gasses slip away into space.
月球的微弱引力允许气体逃到太空里去。
18.
Closed-loop Traction Control of Lunar Rover Based on Dynamic Model
基于动力学模型的月球车闭环牵引控制