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light-year的英文翻译是什么意思，词典释义与在线翻译：
英英释义
Noun:
-
the distance that light travels in a vacuum in 1 year; 5.88 trillion miles or 9.46 trillion kilometers
light-year的用法和样例：
例句
用作名词 (n.)
- The distance can be expressed in light years.
距离可以用光年表示。 - A place that requires one year for light to reach is one light year distant from us.
因此光需要一年时间才能到达的地方离我们也就是一光年的距离。
