| 单词 | light year |
| 释义 | light yearlight yearslight yearˈlight year noun [countable] the distance that light travels in one year (about 9,460,000,000,000 kilometres), used for measuring distances between starsPhraseslight years ahead of something/better than something etc informal more advanced, much better etc than someone or something else: This product is light years ahead of its competitors.beyearcompetitor这个产品远远胜过它的竞争对手。 |
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