| 单词 | light year |
| 释义 | light year noun[C] uk/ˈlaɪt ˌjɪər/us/ˈlaɪt ˌjɪr/thedistancethatlighttravelsin oneyear(about 9.5 million millionkilometres) 光年（指光1年走过的距离，约为9.5兆公里）Years & yearly
You can also find related words, phrases, and synonyms in the topics: Measurements in general Idiomlight years away light year| American Dictionarylight year noun[C] us/ˈlɑɪt ˌyɪər/earth science thegreatdistancethat lighttravelsin one year; about 5,880,000,000,000milesor 9,460,000,000,000kilometers earth science People sometimes say light years totalkabout anextremelylongdistanceortime: When I was ayoungman, being 50seemedlight years away. Examplesoflight yearlight year The year 1921 was an exceptionallylightyearfor sickness, and many actuaries regarded it as an abnormallylightyear. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under theOpen Parliament Licence v3.0 In alightyeara ray of light travels 6 trillion miles, but we do not want to go into that. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under theOpen Parliament Licence v3.0 When they come within onelightyearof one another, they will emit gravitational waves that will radiate further orbital energy until they merge completely. From Wikipedia  This example is from Wikipedia and may be reused under a CC BY-SA license.In some cases, specialized units are used, such as the astronomer's parsec andlightyearor the particle physicist's barn. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.It would need about 17,565 years at this speed to travel a completelightyear. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.This was coherent with the estimation made by astronomers in 1938, but after some additional measurement, this distance was re-estimated at 14.3lightyear. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.Along its longest visible dimension, it thus measures about 13 3lightyearacross. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.This is equivalent to moving a distance of onelightyearevery 14,700 years. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.The distance to this star has been measured directly using the parallax method, which places it away with a margin of error of about alightyear. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.The nearest other intelligent life form must be roughly 10 billion light years away. From theCambridge English Corpus Partly for this reason, it is still the unit preferred in astronomy and astrophysics, though thelightyearremains prominent in popular science texts and more everyday usage. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.If this acceleration were to continue forever at its present rate, our descendants could devour only the region currently within about 10 billion light years. From theCambridge English Corpus However, if the player happened to find a system 655.36 to 670.36 light years away, it would be counted by the game as within the 15lightyearrange. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.Their results indicate that the bar is 27 000 light years long. From theCambridge English Corpus Our standards of training are already light years ahead of those in almost every private security company. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under theOpen Parliament Licence v3.0 These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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