一光年到底有多远。
The distance of a light year boggles the imagination.
一光年的距离大得令人难以想象。
Light year means the distance that light covers in a year.
光年是指光在一年时间里所跑过的距离。
The Oort Cloud is thought to extend about 1 light year from the Sun.
欧特云团距太阳1光年距离。
A short distance, to be sure, but at the time it felt like a light year.
确实只有很短的距离，但那时我却感到距离了一光年似的。
No one would say that. A light year is a unit of distance not time.
没有人会那么说，一光年是距离单位不是时间单位。
Matese estimates Nemesis is 25,000 AU away (or about one-third of a light year).
玛提斯认为“复仇者”距太阳有25000个天文单位(或者说三分之一光年)。
Matese estimates Nemesis is 25, 000 AU away (or about one-third of a light year).
玛提斯认为“复仇者”距太阳有25000个天文单位(或者说三分之一光年)。
Know astronomical unit and light year are used for expressing the distance between celestial bodies.
知道天文单位和光年是用来丈量天体之间距离的单位。
The monster, on the right, is actually an inanimate pillar of gas and dust that measures over a light year in length.
右边的怪物，实际上是无生命的气体和尘埃柱，据测长度超过一光年。
For their research, scientists spent five years studying 166 Sun-like stars within 80 light year - or 470 trillion miles - of Earth.
研究中，科学家们用五年时间分析计算了166个距离地球80光年(470兆英里)以内的类日恒星。
I know that time and distance can destroy everything, and you can spend time together, even if separated by a light year can save time.
我知道，时间和距离可以摧毁一切，可和你在一起的时间，就算隔着光年也能把时间拯救。
It's about 2 light-years long and half a light-year wide. It's located about 2, 000 light years away in the direction of the Constellation Cygnus.
它大约有2光年长、半光年宽，位于天鹅座方向，距地球约2,000光年。
Even if the U.S. has its third consecutive catastrophe-light year, industry profit margins will probably shrink by four percentage points or so.
即便美国已经进入了持续轻微衰退期的第三个年头，但是产业的利润很可能还是会有4%的缩水。
The Oort cloud is a vast belt of dust and ice that is believed to lie around one light year from the Sun and is the origin of many of the comets that pass through our solar system.
奥尔特云是一个由粉尘和冰组成的庞大云带，据信它距离太阳约一光年，许多穿越我们太阳系的彗星都来自那里。
Solar system is by receives the system which the gravitational pull restraint the heavenly body is composed, its most wide range approximately may extend to 1 light year outside.
太阳系是由受太阳引力约束的天体组成的系统，它的最大范围约可延伸到1光年以外。
Thee Oort cloud is a vast belt of dust and ice that is believed to lie around one light year from the Sun and is the origin of many of the comets that pass through our solar system.
奥尔特云是一个由粉尘和冰组成的庞大云带，据信它距离太阳约一光年，许多穿越我们太阳系的彗星都来自那里。
For six months of the year, there is hardly any light at the poles.
一年中的6个月里，地球的两极几乎没有任何光线。
For the last three years, light shows on the Bund have been successfully held for New Year's Eve celebrations, but this year the light show was canceled and there were fewer police on hand.
在过去的三年里，外滩的灯光表演在新年前夜的庆祝活动上成功举办，但今年的灯光表演被取消了，现场的警察也减少了。
Horseshoe crabs kept in the dark continuously for a year were found to maintain a persistent rhythm of brain activity that similarly adapts their eyes on a daily schedule for bright or for weak light.
人们发现，连续一年被关在黑暗的环境中的鲎仍然可以保持稳定的大脑活动节奏，这种稳定的节奏也使得它们的眼睛适应每日或明或暗的光线。
"You are as light as sea-shells," answered the Tunny, who was as large as a two-year-old horse.
“你们像海贝壳一样轻。”金枪鱼回答说，他有一匹两岁的马那么大。
Why do we light firecrackers on Chinese New Year?
为什么中国过新年要放鞭炮？
Last year, the light-coloured car sold better than the dark-coloured ones.
去年浅色车比深色车卖得好。
By 2011 debris in the center of the ring, which is about a light-year in diameter, was blazing more intensely as the supernova entered a new stage of stellar demise.
到2011年为止，因为这个超新星进入了星球消亡的新阶段，所以这环物质中心直径大约是一光年的碎片燃烧的更加强烈了。
This image was produced by combining a dozen Chandra observations made of a 130-light-year region in the center of the Milky Way.
这张照片是多张钱德拉天文台的照片合成的，显示的是130光年远的银河系的中心部分。
Within just a light-year of the black hole swarm more than 100,000 other stars caught far more firmly in its grip.
仅在黑洞的一光年范围内就云集着另外十多万颗恒星，处在它更牢固的掌控之中。
Within just a light-year of the black hole swarm more than 100,000 other stars caught far more firmly in its grip.
仅在黑洞的一光年范围内就云集着另外十多万颗恒星，处在它更牢固的掌控之中。
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