| 单词 | light year |
| 释义 | light year WordReference English-Chinese Dictionary © 2019:主要翻译英语中文light year, light-year, lightyear nnoun: Refers to person, place, thing, quality, etc. (astronomy: measure of distance) (天文学：距离的量度)光年 Barnard's Star is 5.96 light years away from Earth. |
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