| 释义 |
light year
noun countable
■the distance that light travels in one year (about 9 500 000 000 000 kilometres) 光年（指光1年走过的距离，约为9.5×1012千米）
noun countable
light years away
■an extremely long time from now in the past or future （时间上）极其遥远的•It all happened when I was at college, which seems light years away now that I'm over fifty.那都是发生在我上大学期间的事情，已经非常遥远了，我现在都已经50多岁了。 |