light-year

美

英

复数：light-years

权威英汉双解

light-year

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1.	光年（指光在一年中走过的距离：9.4607 × 10&sup12 公里）the distance that light travels in one year, 9.4607 × 10&sup12 kilometres

The nearest star to earth is about 4 light years away.

地球离最近的恒星大约为 4 光年。

2.	[pl] 很长时间；很久a very long time

Full employment still seems light years away.

充分就业好像依然是遥遥无期。