| 1. | The earth is round because of gravity .
地球是由于重力而成为球形的。 |
| 2. | We have to submit to law of gravity .
我们必须服从引力定律。 |
| 3. | This is a matter of the utmost gravity .
这件事情十万火急。 |
| 4. | A juggler really runs a race with gravity .
玩杂耍的人确实在跟地心引力竞赛呢。 |
| 5. | The stone rolled down the mountain by gravity .
这块石头由于重力作用而滚下山。 |
| 6. | Gravity holds a privileged position .
引力占有特殊地位。 |
| 7. | His gravity made us laugh immoderately .
他那一本正经的样子，使我们笑得不可开交。 |
| 8. | The gravity is measured by nulling the beam .
重力值是通过使横臂恢复零位而测定的。 |
| 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. | With variations of gravity the weight rises or falls .
荷重随着重力的变化而升起或降落。 |
