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光年是一个天文单位。用英语怎么说？

光年是一个天文单位。

Light-year is an astronomical unit.

相关词汇
is an astronomical unit

is

vt.& vi. 是（be的三单形式；n. 存在；

an

art. 一（在元音字母前代替不定代词a），一任一某一，一个；

astronomical

adj. 天文学的，极大的；

unit

n. 单位，单元，装置，个体，[数]单位数；
热门例句
He acknowledged publicly that he might have made a mistake.
他当众承认自己可能犯了个错误。
...the spiralling vortex airflow that slows the plane.
使飞机减速的螺旋形气流涡旋
You just go on ahead. I'll come by later...
你只管先往前走。我随后就来。
He who spares his rod hates his son, But he who loves him chastens him early.
24不忍用杖打儿子的,是恨恶他;疼爱儿子的, 趁早管教.
For further information, please contact 414 3925, extension 2253.
详情请致电414 3925,转分机2253。
He sat there while I made the case for his dismissal...
他坐在那儿，听我陈述解雇他的理由。
Baroness Thatcher's claims seem credible to many.
撒切尔女男爵的主张在很多人看来是可信的。
Nothing to be got without pains but poverty.
一份耕耘，一份收获。
This decree obliges unions to delay strikes.
该法令迫使工会推迟罢工。
The right to demand payment from the endorser of a commercial paper when the first party liable fails to pay.
追索权当有支付义务的第一方不能支付时，可以向商业票据的背书人要求支付的权力。
相关例句
Many people associate dark clouds with depression and gloom.
许多人把乌云与沮丧、阴郁联系起来。
She loves art.
她热爱美术。
Why did he cast aspersions upon us?
他为什么要中伤我们?
Her father's sudden death astonished her.
父亲突然逝世使她大为震惊。
That man is not very articulate.
那人口齿不清。
His arrogance comes out in every speech he makes.
他每次讲话都表现得骄傲自大。
The men trapped in the mine were asphyxiated by gas.
那些困在矿井中的人因瓦斯中毒窒息死亡。
This is as difficult a problem as you are likely to meet.
像这样的难题, 你可能会碰到。
We talked about such subjects as the weather.
我们谈论了诸如天气之类的话题。
a ashen face
面如土色
I was coming in as he was going out.
我进来的时候, 他正出去。
assemblage technology
装配技术
To our astonishment, they arrived on time.
使我们惊奇的是, 他们准时来到了。
Their society was built around a belief in God.
他们的社会建立在信仰上帝的基础上。