| 1. | We don ' t realize how much we depend on the earth ' s gravity
我们意识不到我们对地球引力的依赖性到底有多大。 |
| 2. | The gravity on mars is only about three - eighths of the gravity on earth
火星上的引力只有地球引力的八分之三 |
| 3. | 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。 |
| 4. | If you would hit the mark , you must aima little above it ; every arrow that flies feels the atraction of earth
若想射中靶子，就得瞄得高一些；每射出去的箭都会受到地球引力的影响。 |
| 5. | Sometimes i think the discovery of gravitation perhaps should be credited to those apples falling on newton ' s head
有时候我想地球引力的发现也许应该归功于那几只落在牛顿头上的苹果 |
| 6. | Studies of the graity field of the earth indicate that its crust and mantle yield when unusual weight is placed on them
对地球引力的研究表明，在不寻常的负荷之下地壳和地幔会发生位移。 |
| 7. | Studies of the gravity field of the earth indicate that its crust and mantle yield when unusual weight is placed on them
对地球引力的研究表明，在不寻常的负荷之下地壳和地幔会发生位移。 |
| 8. | These are the factors that govern the various forms of drag resistance and are independent of orientation to gravitational pull
独立于方位和地球引力的因素支配着这些不同形式的拖曳阻力。 |
| 9. | As the moon ' s gravity is only about 1 / 6 the gravity of the earth , a 200 - pound man weights 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磅的人在月球上仅重33磅。 |
| 10. | Satellites , however , must be closely watched , for they are constantly being tugged at by the gravitational attraction of the sun , moon and earth
由于经常受到太阳、月亮和地球引力的影响，卫星活动必须加以密切的观察。 |
