光年的英文：
lightyear

參考例句：
  • 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
    無論發(fā)生哪種情況，飛船與那顆恒星的距離將是一或二光年。不會發(fā)生任何碰撞事故。
lightyear是什么意思：
n. 光年
  • 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.
    玫瑰星云的寬度約100光年，離地球約5000光年遠(yuǎn)，用小型望遠(yuǎn)鏡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
    無論發(fā)生哪種情況，飛船與那顆恒星的距離將是一或二光年。不會發(fā)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
    該陣列目前正在仔細(xì)觀測距地球只有11,000光年的一個小的、而從現(xiàn)象上看似乎很亮的天體，它可能是我們銀河系后庭院的一個潛在黑洞。

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