light-year单词基本解析：

n.<天>光年
n. 光年
n.光年；

light-year变化用词：

light-year英英释义：

名词 light-year:

the distance that light travels in a vacuum in 1 year; 5.88 trillion miles or 9.46 trillion kilometers

同义词：light year

light year[ 'laitjə: ]n.the distance that light travels in a vacuum in 1 year; 5.88 trillion miles or 9.46 trillion kilometers

同义词：light year

light-year中文词源：

light-year用法和例句：

light-year

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。

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