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light-year单词什么意思_light-year单词解释 light-year的反义词light-year的例句

light-year

light-year 基本解释

名词[…]lt;天[…]gt;光年

light-year 英英释义

noun

1. the distance that light travels in a vacuum in 1 year
[…]nbsp;[…]nbsp;[…]nbsp;[…]nbsp;5.88 trillion miles or 9.46 trillion kilometers

[…]nbsp;[…]nbsp;[…]nbsp;[…]nbsp;Synonym: light year

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