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单词 light year
释义

light year

Word forms: plural light years
1. countable noun
A light year is the distance that light travels in a year.
...a star system millions of light years away.
2. countable noun [usually plural]
You can say that two things are light years apart to emphasize a very great difference or a very long distance or period of time between them.
[informal, emphasis]
She says the French education system is light years ahead of the English one.
I had not eaten anything hot since my last dinner with Sean. It seemed light-yearsaway.

light year in British English

noun
a unit of distance used in astronomy, equal to the distance travelled by light in one year, i.e. 9.4607 × 1012 kilometres or 0.3066 parsecs

light-year in American English

(ˈlaɪtˌjɪr)
noun
1.  Astronomy
a unit of distance equal to the distance that light travels in a vacuum in one year, c. 9,460,000,000,000 km (5,880,000,000,000 mi)
abbrev. lt-yr or ly see also parsec
2. 
a very great distance, amount of time, etc.
usually used in pl.
light-years ahead in basic research
Also written light year

Examples of 'light year' in a sentence
light year

It just looks and feels light years ahead of anything it has made before.
The Sun (2017)
We are light years ahead.
Times, Sunday Times (2017)
Nutrition, diet, conditioning are light years away from a generation ago.
Times, Sunday Times (2016)
It is all light years away from the universe she is about to inhabit on screen.
Times, Sunday Times (2015)
Their lives were light years apart from those of the military men of the group.
Times, Sunday Times (2007)
He was so clearly light years ahead of anybody else.
Times, Sunday Times (2008)
Some would say in football terms they are light years apart.
The Sun (2012)
Are we really ready for the appearance of new neighbours and adversaries just a few light years away?
Times, Sunday Times (2007)
The quality of the images you get is light years ahead of what it was just a decade ago.
The Sun (2011)
That these two experiences are light years apart says much about the total transformation of cruising in that time.
Times, Sunday Times (2014)
So comparatively we're light years ahead.
The Sun (2014)
It is light years ahead of the Vectra it replaced.
The Sun (2009)
There's not one duff track on the entire album and it is was light years ahead of its time.
The Sun (2012)
They seem light years away.
Times, Sunday Times (2014)
The stuff I heard is light years ahead of the last one.
The Sun (2008)
Scandinavian drama truly is light years ahead of any indigenous UK drama.
Times, Sunday Times (2014)
But although we do all live on the same planet, it very often appears that we are light years away from each other in understanding.
Mansfield, Patricia Why Am I Afraid to be Assertive? (1994)
They've hit their peak and it's light years ahead of the competition.
The Sun (2011)
In short, it's light years ahead.
Times, Sunday Times (2013)
She was light years ahead academically because of the quality of French education, yet she loathed the place.
Times, Sunday Times (2011)
You can see 30 billion light years away, there are hundreds of billions of galaxies and hundreds of billions of stars.
Times, Sunday Times (2011)
Stoke may have been just once place above Villa at kick-off but they were light years ahead of them on the pitch.
Times, Sunday Times (2015)

In other languages
light year

British English: light year NOUN
A light year is the distance that light travels in a year.
...a star system millions of light years away.
  • American English: light year
  • Brazilian Portuguese: ano-luz
  • Chinese: 光年
  • European Spanish: año luz
  • French: année-lumière
  • German: Lichtjahr
  • Italian: anno luce
  • Japanese: 光年
  • Korean: 광년
  • European Portuguese: ano-luz
  • Latin American Spanish: año luz
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更新时间：2025/2/3 14:57:14