| 1. | Usually they burn up about 100km above the earth .
它们常在地球上空约100公里处被烧毁。 |
| 2. | On a bright and clear day a 15-cm helio can be seen at 50 km .
在明朗的晴天，15厘米大小的回照光在50公里处能看到。 |
| 3. | Depths of these hypocenters concentrate at about 12km deep in the upper crust .
这些震源深度集中在地壳上部约12公里处。 |
| 4. | The lower boundary of the region above which molecular diffusion dominates is 120 km altitude and is known as the turbopause .
分子扩散占主导地位的区域下界约在120公里处称为湍流层顶。 |
| 5. | The airport is a few kilometers to the south of london
机场在伦敦南方数公里处。 |
| 6. | No . 1300 qili dianchi road guandu region kunming
昆明市官渡区滇池路七公里处1300号 |
| 7. | Raul : it ' s about 50 kilometres north of the city
劳尔：城市以北约五十公里处。 |
| 8. | Cheshunt is a few kilometers to the north of london
切森特位于伦敦北方数公里处。 |
| 9. | Tianjin is situated l20 km southeast of beijing
天津位于北京东南120公里处。 |
| 10. | Tianjin is situated 120 km southeast of beijing
天津位于北京东南120公里处。 |
