light year
US /ˈlaɪt ˌjɪr/
UK /ˈlaɪt ˌjɪər/
名词
1.
光年
a unit of astronomical distance equivalent to the distance that light travels in one year, which is nearly 6 trillion miles (9.46 trillion kilometers)
示例:
•
The nearest star to Earth, Proxima Centauri, is about 4.2 light years away.
离地球最近的恒星比邻星距离我们大约 4.2 光年。
•
Astronomers use the light year to measure vast distances in space.
天文学家使用光年来测量宇宙中的巨大距离。
2.
光年, 巨大的差距
a very long distance or a great amount of time (used figuratively to emphasize a large difference)
示例:
•
Their technology is light years ahead of ours.
他们的技术领先我们好几光年。
•
The two candidates are light years apart on this issue.
这两位候选人在这个问题上的观点相差好几光年。