| 41. | a step [three - stage ] rocket |
| 多级[三级]火箭
|
| 42. | a surface - to - air rocket |
| 地对空火箭
|
| 43. | rocket propulsion |
| 火箭推进
|
| 44. | a rocket projector |
| 火箭发射装置
|
| 45. | fire a rocket shot at the room |
| 向月球发射火箭
|
| 46. | a rocket ship |
| 火箭舰艇，火箭发射舰
|
| 47. | the launching site for a rocket |
| 火箭发射场
|
| 48. | rocket sounding |
| 用火箭探测大气
|
| 49. | a stand for firing a rocket |
| 火箭发射台
|
| 50. | the rocket like swiftness of ascent |
| 如火箭般的速度上升
|