| 1. | The sample size would have to be quadrupled .
样本量必须增大三倍。 |
| 2. | The crop acreage could be quadrupled .
耕地面积可增加三倍。 |
| 3. | This object has been photographed at a magnification of 3 .
此物体拍照时已放大了三倍。 |
| 4. | His salary is treble mine .
他的薪水是我的三倍。 |
| 5. | The power utilities will need to quadruple their capacity .
电力事业必须使它们的能力增加三倍。 |
| 6. | Output has tripled .
产量已增加到三倍。 |
| 7. | It discharges three times as much water as the st. lawrnce .
它流出的水量有圣罗伦斯河的三倍那么多。 |
| 8. | This was compounded by the doubling and redoubling in the size of armies and navies .
陆军和海军两倍、三倍地扩充规模，更是火上加油。 |
| 9. | "i think so too," replied barbicane; "that is why i propose to quadruple the length. "
“我也是这样想，”巴比康回答;“所以我建议把这个长度扩大三倍。” |
| 10. | Yet this is the thirty-fourth month since lord baldwin decided that the air force must be tripled .
可是，自鲍得温勋爵作出决定把空军扩充三倍到现在，已经是第三十四个月了。 |
