| 单词 | rockoon |
| 释义 | rockoon(rɒˈkuːn) noun a rocket carrying scientific equipment for studying the upper atmosphere, fired from a balloon at high altitude Word origin C20: from rocket1 + balloon |
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英语词典包含233703条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。