Early light - year ( AD 319 years ) after the establishment of Zhao crown.
光 初二年 ( 公元319年 ) 稱王建立后趙.
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A light - year is the distance light travels in one year.
一 光年 是光運(yùn)行一年所走的距離.
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Astronomers use light - year to talk about distance in space.
天文學(xué)家用 光年 表示宇宙空間的距離.
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More than one million light - year !
超過(guò)一百萬(wàn) 光年!
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Do you know the light year?
你知道光年 嗎 ?
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It is over 4 light - year away from earth.
它距地球4 光年 多.
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And one light year is the distance that light travels in a year . 1.
一光年就是光在一年中傳播的距離.
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A light - year is about 6 trillion miles, the distance light travels in a year.
一 光年 大約6百億億英里, 即光行走一年的距離.
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And one light year is the distance that light travels in a year.
和一架輕型今年是距離光在一年.
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We are lagging behind at China with the speed of light - year, overtook impossibly again.
我們正在以光年的速度落后于中國(guó), 不可能再追上了.
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The distance travelled by light in one year is called a light year.
光在一年內(nèi)行經(jīng)的距離稱作1光年.
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The distance traveled by light in one year is called a light year.
一光年的距離大得令人難以想象.
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