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light-year的英文翻譯是什么意思，詞典釋義與在線(xiàn)翻譯：
英英釋義
Noun:
-
the distance that light travels in a vacuum in 1 year; 5.88 trillion miles or 9.46 trillion kilometers
light-year的用法和樣例：
例句
用作名詞 (n.)
- The distance can be expressed in light years.
距離可以用光年表示。 - A place that requires one year for light to reach is one light year distant from us.
因此光需要一年時(shí)間才能到達的地方離我們也就是一光年的距離。
