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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
He managed to swim ashore.
他设法向岸边游过去。
He was discovered living under an assumed identity in South America.
他被发现以伪造的身分居住在南美洲。
She was arraigned for high treason.
她被控叛国罪。
His promotion was assured.
他的晋升是无疑的。
I don’t permit to cast aspersions on my friend.
我不许你诽谤我的朋友。
Life is long, and art is short.
生命永恒，艺术短暂
to associate oneself with a cause
投身于一项事业中去
Articulate speech is very important.
清楚的表达能力是非常重要的。
Arrogance arrested his progress.
骄傲阻碍了他的进步。
The artillery were fighting.
炮兵正在作战。
Her ashes were spread over the sea.
她的骨灰被撒到海里。
As soon as the young man returned home,his parents assailed him with questions about the interview.
那年轻人刚回到家,他的父母便向他问这问那的,打听他求职面试的事。
The new houses have been built with astonishing speed.
这些房子的修建速度快得惊人。
I was coming in as he was going out.
我进来的时候, 他正出去。