| 单词 | Light Year |
| 释义 | Light Year A convenient unit for measuring the large distances in the universe. It is the distance that light travels in one year which, given that light travels at 300,000 kilometres per second, works out to about 9,460,000,000 kilometres (9.46 trillion kilometres). |
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科学参考收录了15208条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。