核能是迄今为止我们拥有的最洁净、最高效的能源——以光年计算(不太明白)。

Nuclear energy is the cleanest, most efficient energy we have - by light years.

youdao

知道天文单位和光年是用来丈量天体之间距离的单位。

Know astronomical unit and light year are used for expressing the distance between celestial bodies.

youdao

光年是一个天文单位。

Light - year is an astronomical unit.

youdao

没有人会那么说，一光年是距离单位不是时间单位。

No one would say that. A light year is a unit of distance not time.

youdao

我是巴斯光年，保护宇宙小组的太空骑警。

I'm Buzz Lightyear, Space Ranger, universe Protection Unit.

youdao

我是巴斯光年，和平使者。

I am Buzz Lightyear. I come in peace.

youdao

光年是指光在一年时间里所跑过的距离。

Light year means the distance that light covers in a year.

youdao

光年是指光在一年时间里所跑过的距离。

Light year means the distance that light covers in a year.

youdao