It spans about 3,000 light-years in diameter, compared to the Milky Way's 100,000 light-year diameter.
它的直径大约为3000光年，而银河系的直径有100000光年。
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。
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。
For a crew to make the 50, 000-light-year journey to the centre of the Milky Way within 10 years, they would have to travel at 99.999998 per cent the speed of light.
要在10年内飞行50000光年到达银河系中心，飞船速度必须达到光速的99.999998%。
A 30-year-old object believed to be the youngest black hole ever seen, is a remnant of SN 1979c, a supernova in the galaxy M100, shown here, approximately 50 million light-years from Earth.
一个三十岁年龄的天体据信是人类观察到的最年轻的黑洞，它是M 100星系里名为SN 1979c的超新星的余烬，距离地球大约5000万光年，如上图所示。
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。
Using this data, researchers believe that each year several times the mass of our sun is being deposited out to large distances, about 3,000 light years from the black hole.
通过这些数据，研究者相信在每一年中都有数倍于我们太阳质量的物质被散布在黑洞周围3000光年的广大区域里。
As a result, Snow is believed to already be bigger than Bud Light and its position at the top of the global booze league is expected to be confirmed at the end of the year.
因此，业界相信雪花已经超越了Bud Light，全球酒业市场老大的地位也会在今年年末得到确认。
For some, fireworks are a solemn matter of superstition: the sound and light show is believed to scare away evil spirits and ensure an auspicious good year.
对一些人而言，爆竹是一种隆重的迷信：他们认为爆竹的声响和光亮能够驱赶恶灵，以保证一个吉祥的好年。
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。
In America sales of cars and light trucks in December fell by 33.5% compared with a year ago, and in Spain they crashed by nearly half.
在美国，12月的轿车以及轻型卡车的销量与上一年同期相比下降了百分之33.5%。同一项数据在西班牙下降了将近一半。
Winter comes with the shortest days and lowest light of the year.
冬天是一年中白昼最短光线最灰暗的季节。
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。
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)。
By 2024, say the team, our planet's computers will be getting through enough data every year to build a stack of books as far as the next star, Alpha Centauri, 4.37 light years away.
据这个小组说，到了2024年，我们星球的计算机每年消耗的数据量将可以建造一堆足以到达下一颗星球- 4.37光年之外的半人马座阿尔法星-的书了。
This year, scientists announced that they had seen shimmers of light from the planets themselves.
今年，科学家宣布他们发现这些星体上传出的微光。
Because fresh water is lighter, care had to be taken not to draw down the lake too much in any given year lest the covering layer of fresh water becomes too light to hold the salt water down.
因为淡水比重较轻，所以每一年从湖中取水都需要慎之又慎，否则顶层淡水过少会无法覆盖咸水。
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。
The novel "Ghost Blows Out the Light" debuted as a smash hit on the Internet back in March last year, and was later released in printed form in October.
小说《鬼吹灯》去年三月在互联网上造成了轰动，十月出版成书。
Since the invention of the light bulb, people sleep about 500 hours per year less than they used to.
自从灯泡发明之后，人们比没有灯泡的时代平均一年少睡500个小时的觉。
Also, a scholarship has been started in Deana's name at her school and every year a graduating senior who smiles and brings light to another student's day is awarded a scholarship for further studies.
此外，还在Deana的学校以她的名字设立了一项奖学金，每年颁发给一名乐观并能给另一个学生的生活带来阳光的毕业班学生，使他能继续求学。
This means the northern and southern hemispheres will sometimes point toward or away from the sun depending on the time of year, varying the amount of light they receive and causing the seasons.
这意味着南半球和北半球会在一年的不同时间段朝向太阳或背向太阳，引起接受的光照量的变化和并产生季节变化。
Sales of cars and light trucks in December 2008 were 35.5% lower than the year before.
2008年12月，轿车和轻型卡车的销售比去年减少了35.5%。
MIT researchers made headlines last year with their "WiTricity" (Wireless Electricity) test that also lit a light bulb from several feet away, but at a much worse efficiency than the Intel test.
由于使用“WiTricity”(无线电力)验证了从几英尺外点亮一只灯泡，麻省理工学院的研究人员去年就上了头条新闻，不过无线传输效率远低于英特尔的。
Last year the Federal Aviation Administration agreed to let it weigh more than other light sport aircraft.
去年，美国联邦航空管理局允许其重量超过其它轻型运动飞机。
These types of airbags became standard on all light-passenger vehicles after the 2007 model year, according to Consumer Guide.
据消费者指南介绍，在2007年以后，这些类型的气囊成为轻型乘用车的标准。
These types of airbags became standard on all light-passenger vehicles after the 2007 model year, according to Consumer Guide.
据消费者指南介绍，在2007年以后，这些类型的气囊成为轻型乘用车的标准。
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