| 单词 | Astronomical Unit |
| 释义 | Astronomical Unit (once / 844237 pages) n WORD FAMILY Astronomical Unit n a unit of length used for distances within the solar system; equal to the mean distance between the Earth and the Sun (approximately 93 million miles or 150 million kilometers) Syn|Hyper AU astronomy unit a linear unit used for astronomical distances |
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英语词典包含147318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。