| 单词 | free space |
| 释义 | Word Frequency free spacenoun a region that has no gravitational and electromagnetic fields: used as an absolute standard Also called (no longer in technical usage): vacuum |
| 随便看 |
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。