| 单词 | rockoon |
| 释义 | rockoon in British English (rɒˈkuːn) noun a rocket carrying scientific equipment for studying the upper atmosphere, fired from a balloon at high altitude Word origin C20: from rocket1 + balloonrockoon in American English (rɑˈkun; ˈrɑkun) US noun a high-altitude sounding system in which a rocket is launched upward from a balloon that has reached its maximum altitude Word origin rocket1 + balloon |
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