light year
短语
大学
★☆☆☆☆
n. 光年
发音
UK
/ˈlaɪt.jɪə/
US
/ˈlaɪt.jɪɹ/
ZA
/ˈläːt.jøː/
其它
/ˈlaɪt.jɜː/
词形变化
light years
复数
abbreviation ly
复数
别名
ly
lightyear
教材释义与例句
名词
光年（指光在一年中走过的距离：9.4607 × 10¹2 公里）
名词
光年俊驹
释义与例句
n.
-
1.
A unit of length used to measure extremely large distances, equal to approximately 9.46 trillion kilometres 10 trillion kilometres (10¹⁶ metres), equivalent to the distance light travels in one Julian year.
光年
天文 -
2.
A very long way.
遥遥领先
比喻 非正式The marathon runner in the lead is light years ahead of the one at the back.
-
3.
A very long time.
比喻 非正式Some of Leonardo da Vinci’s inventions were light years ahead of their time.