| 单词 | first motion |
| 释义 | Definition of first motion in English:first motionadjective Mechanics
OriginMid 19th century. Definition of first motion in US English:first motionadjective Mechanics
OriginMid 19th century. |
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英汉双解词典包含464360条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。