light-year

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  • na.【天】光年
Plural Form：light-years  

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Web Definition

light-year
n.
1.
光年（指光在一年中走过的距离：9.4607 × 10&sup12 公里）the distance that light travels in one year, 9.4607 × 10&sup12 kilometres
The nearest star to earth is about 4 light years away.
地球离最近的恒星大约为 4 光年。
2.
[pl]
很长时间；很久a very long time
Full employment still seems light years away.
充分就业好像依然是遥遥无期。

Sample Sentence

Definition:
AllAll,光年光年
Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard
1.
Also visible, near the bottom of the image, is ten light-year long pillar sometimes dubbed the Fairy of Eagle Nebula .
此外，靠近影像底部有十根长度将近一光年的气柱，它们有时被戏称是老鹰星云的仙女。
cǐ wài , kào jìn yǐng xiàng dǐ bù yǒu shí gēn cháng dù jiāng jìn yī guāng nián de qì zhù , tā men yǒu shí bèi xì chēng shì lǎo yīng xīng yún de xiān nǚ 。
dictsearch.appspot.com
2.
At present, the Earth has surrounded by a 50 light year-wide "shell" of radiation from analogue TV, radio and radar transmissions, he said.
他说，地球目前裹着一层由模拟电视、无线电和雷达传输辐射构成的50光年厚的外壳。
tā shuō , dì qiú mù qián guǒ zhe yī céng yóu mó nǐ diàn shì 、 wú xiàn diàn hé léi dá chuán shū fú shè gòu chéng de wǔ shí guāng nián hòu de wài ké 。
blog.163.com
3.
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。
jǐn zài hēi dòng de yī guāng nián fàn wéi nèi jiù yún jí zhe lìng wài shí duō wàn kē héng xīng , chǔ zài tā gèng láo gù de zhǎng kòng zhī zhōng 。
article.yeeyan.org
4.
One light year is the distance that light travels in a year.
一个光年是光在一年移动的距离。
yī gè guāng nián shì guāng zài yī nián yí dòng de jù lí 。
www.bing.com
5.
One light year is the distance light will travel in a year, or about 6 trillion miles (10 trillion kilometers).
一光年是光在一年当中所能够穿行的距离，或者说大约相当于6万亿英里（10万亿公里）。
yī guāng nián shì guāng zài yī nián dāng zhōng suǒ néng gòu chuān xíng de jù lí , huò zhě shuō dà yuē xiāng dāng yú liù wàn yì yīng lǐ ( shí wàn yì gōng lǐ ) 。
www.showxiu.com
6.
A light-year is the distance light travels in a year, or roughly 6 trillion miles (10 trillion kilometers).
光年是指光传播一年时间的距离，相当于10万亿公里（6万亿英里）。
guāng nián shì zhǐ guāng chuán bō yī nián shí jiān de jù lí , xiāng dāng yú shí wàn yì gōng lǐ ( liù wàn yì yīng lǐ ) 。
bbs.bjp.org.cn
7.
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。
zhī dào tiān wén dān wèi hé guāng nián shì yòng lái zhàng liáng tiān tǐ zhī jiān jù lí de dān wèi 。
blog.sina.com.cn
8.
An approximately one-light-year tall "pillar" of cold hydrogen towers above the wall of the molecular cloud.
从分子云墙上耸立出来的一个大约1光年高的冷氢气柱。
cóng fēn zǐ yún qiáng shàng sǒng lì chū lái de yī gè dà yuē yī guāng nián gāo de lěng qīng qì zhù 。
www.astronomy.com.cn
9.
light year , which is the distance traveled by light in one year . note that light year is a distance scale , not a time scale.
为量度单位，一光年是光在真空中行走一年的距离，紧记光年是距离单位而不是时间单位。
wèi liáng dù dān wèi , yī guāng nián shì guāng zài zhēn kōng zhōng xíng zǒu yī nián de jù lí , jǐn jì guāng nián shì jù lí dān wèi ér bú shì shí jiān dān wèi 。
www.ichacha.net
10.
Both are planetary nebulae, gaseous shrouds cast off by dying sunlike stars, and are similar in physical size, at a light-year or so across.
都是行星状星云，气体外壳都是由濒临死亡的恒星吹出，在物理大小上类似，涵盖大约一光年左右。
dōu shì xíng xīng zhuàng xīng yún , qì tǐ wài ké dōu shì yóu bīn lín sǐ wáng de héng xīng chuī chū , zài wù lǐ dà xiǎo shàng lèi sì , hán gài dà yuē yī guāng nián zuǒ yòu 。
dictsearch.appspot.com