光年的英文怎么说

光年的英文：
lightyear

In either case the ships will be at a distance of one or two light-years from the star. There won't be any crash
无论发生哪种情况，飞船与那颗恒星的距离将是一或二光年。不会发生任何碰撞事故。

The Rosette Nebula spans about100 light-years across, lies about5000 light-years away, and can be seen with a small telescope towards the constellation of Monoceros.
玫瑰星云的宽度约100光年，离地球约5000光年远，用小型望远镜朝著麒麟座的方向看便能看到。

In either case the ships will be at a distance of one or two light-years from the star. There won't be any crash
无论发生哪种情况，飞船与那颗恒星的距离将是一或二光年。不会发生任何碰撞事故。

The array is now scrutinizing a small, phenomenally powerful object just 11,000 light-years away, a potential black hole in our galactic backyard
该阵列目前正在仔细观测距地球只有11,000光年的一个小的、而从现象上看似乎很亮的天体，它可能是我们银河系后庭院的一个潜在黑洞。