名詞 light-year:

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

1. Genuine racial equality still seems light-years away.
   真正的種族平等似乎仍遙遙無期。

light-year 也作 light year

n.（名詞）
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：一束光在真空里傳播的距離，約9.'4萬億（9.4'×02)公里或5.88萬億(5.88× 2)英里
Often light-years Informal A long way:
常作 light-years 【非正式用語】 很長(zhǎng)的路：
例句：
a small town light-years away from the action of the capital.
遠(yuǎn)離首都喧囂的小鎮(zhèn)