light
year
复数形式
light-years
1
光年, 光年
the distance that light travels in a year (about 9.46 trillion kilometers)
- Proxima Centauri, the closest star to Earth, is 4.24 light-years away.
比邻星，距离地球最近的恒星，位于4.24 光年之外。
- The galaxy is roughly 100,000 light-years in diameter.
银河系的直径约为100,000 光年。
- "That nebula is 1,500 light-years distant," explained the astronomer.
"那个星云距离1,500 光年，" 天文学家解释道。
- A light-year is a unit of distance, not time—despite its name.
光年是一个距离单位，而不是时间单位——尽管它的名字如此。
- The telescope captured light from a quasar billions of light-years away.
望远镜捕捉到了来自数十亿光年外的一个类星体的光。
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