| 1. | How many millimeters are there in a kilometer ?
一公里有多少毫米？ |
| 2. | One solar radius equals 696, 000 kilometers .
一个太阳半径等于696，000公里。 |
| 3. | He had walked several kilometers over pavements .
他在人行道上已经走了好几公里。 |
| 4. | The gouge of the fault zone may extend to depths of some kilometers .
断层区的断层泥可能伸展到若干公里的深度。 |
| 5. | The space shuttle can orbit at altitudes of up to 965 kilometers .
这架航天飞机最高能在965公里的高度作轨道运行。 |
| 6. | A tail of dust and gas may stretch millions of kilometers across the sky .
尖埃和气体组成的慧尾可以跨过天空，延伸数万里。 |
| 7. | The filaments are expanding into space at a speed of roughly 5, 000 kilometers per second .
这些纤维状星云物质以每秒大约5000公里的速度向宇宙空间扩展。 |
| 8. | A light-year is the distance light travels in one year at a speed of 299, 792 kilometers per second .
一光年是光以每秒299792公里的速度在一年中所走过的距离。 |
| 9. | Much of the northern lands were covered by vast ice sheets that reached a thickness of as much as 3 kilometers .
北方大陆的大部分地区曾为厚达3公里的大量冰层所覆盖。 |
| 10. | Masses of granite only a few kilometers away herald the vast granite area of central finland to the west .
距此区只数公里的花岗岩体，为其西广大的芬兰中部花岗岩区的前哨。 |
