| 单词 | principal planet |
| 释义 | principal planetnoun : any of the nine known planets of the solar system that comprise the four terrestrial and the five major planets —distinguished from minor planet |
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英语词典包含469781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。