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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。
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。
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。
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
The first part of the ascent is not steep.
开始一段上坡路并不陡峭。
I must ask to be excused.
我必须请求原谅。
He assured me success.
他使我相信能够成功。
She’s busy writing a book on astrology.
她正忙着写一本关于占星术的书。
This remark astounded me.
这话使我大吃一惊。
astride a river
横跨河流
an astringent style of writing
犀利的文风
He assumed a look of innocence.
他装出一副天真无邪的样子。
The army were still fighting in spite of heavy casualties.
尽管伤亡人员众多, 军队仍在继续战斗。
You can rest assured that we will do everything we can to get your money back.
你尽管放心，我们会想一切办法把你的钱要回来。
assemblage technology
装配技术
He has a life assurance.
他投保了人寿保险。
He knocked out his pipe in the big glass ashtray.
他在大玻璃烟灰缸里磕净烟斗。
Articulate speech is very important.
清楚的表达能力是非常重要的。