| 单词 | light year |
| 释义 | light year A unit of distance used in astronomy; the distance travelled by light in a vacuum during one year. It is equal to 9.4650 × 1015 metres or 5.8785 × 1012 miles |
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物理辞典收录了3346条物理词条，基本涵盖了常用物理知识及物理英语单词词组的翻译及用法，是物理学习的有利工具。