light year
英
美
- light n.光;光线;灯;打火机;领悟;浅色;天窗adj.轻的;浅色的;明亮的;轻松的;容易的;清淡的v.点燃;变亮;照亮adv.清楚地;轻便地
- year n.年;年度;年龄;学年
Noun:
-
the distance that light travels in a vacuum in 1 year; 5.88 trillion miles or 9.46 trillion kilometers
- 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。