light-year

n. 光年

light-year 也作 light year

n.（名词）
The distance that light travels in a vacuum in one year, approximately 9.4' trillion (9.4' × 02) kilometers or 5.88 trillion (5.88 × 0 2) miles.
光年：一束光在真空里传播的距离，约9.'4万亿（9.4'×02)公里或5.88万亿(5.88× 2)英里
Often light-years Informal A long way:
常作 light-years 【非正式用语】 很长的路：
例句：
a small town light-years away from the action of the capital.
远离首都喧嚣的小镇