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单词 light year
释义  Related topics: Measurement, Astronomyˈlight year noun [countable]  1  TMHAthe distance that light travels in one year, about 9,460,000,000,000 kilometres, used for measuring distances between stars 光年 a star 3,000 light years from Earth 距离地球3,000光年的一颗恒星2  light years ahead/better etc than something informal much more advanced, much better etc than someone or something else 比某物超前很多/好很多等 The Japanese company is light years ahead of its European competitors. 这家日本公司远远超前于其欧洲的竞争对手。3  light years ago informal a very long time ago 很久很久以前 It all seems light years ago now. 现在看来，这一切都好像非常久远了。ˈlight year nounChineseSyllable  
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更新时间：2026/7/30 1:15:02