| 单词 | 光年 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔Oort cloud〕A swarm of comets orbiting the sun at a distance of one to two light-years, proposed as a source of comets that pass near the sun.奥尔特云：在离太阳一至二光年距离的彗星云，被认为是在太阳附近经过的彗星的来源地美国传统〔astronomical distance〕The distance from one celestial body to another, measured in light-years, parsecs, or astronomical units.天文距离：从一天体到另一天体的距离，以光年，秒差距和天文单位来度量美国传统〔distance〕Altair, at a distance of 17 light-years, is one of the closest of the bright stars.距地球17光年的牵牛星，是离地球最近的发光恒星之一。麦克米伦高阶〔light year〕The nearest star to earth is about 4 light years away.离地球最近的恒星距离地球约 4 光年。牛津高阶〔show up〕The telescope is so powerful that it can show up galaxies billions of light years away.这架望远镜性能强大, 可以使人看见数十亿光年外的星系。外研社新世纪〔travel〕The distance travel(l)ed by light in one year is called a light year.光在一年内行经的距离被称作1光年。英汉大词典〔trillion〕Four light years is 25 trillion miles.四光年相当于25万亿英里。剑桥高阶〔true〕This law is known to hold true for galaxies at a distance of at least several billion light years.已知这条定律同样适用于距离至少几十亿光年远的星系。外研社新世纪〔true〕This law is known to hold true for galaxies at a distance of at least several billion light years.据知，这条定律同样适用于距离至少几十亿光年之远的星系。柯林斯高阶〔void〕Observers have recently found in the Universe giant voids about 500,000,000 light-years across.观察员最近在宇宙中发现了直径约5亿光年的巨型空洞。柯林斯高阶 |
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