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Light-year is an astronomical unit.是什么意思？

Light-year is an astronomical unit.

光年是一个天文单位。

相关词汇
is an astronomical unit

is

vt.& vi. 是（be的三单形式；n. 存在；
例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

an

art. 一（在元音字母前代替不定代词a），一任一某一，一个；
例句
He started eating an apple...
他开始吃苹果。

astronomical

adj. 天文学的，极大的；
例句
Houses in the village are selling for astronomical prices...
乡村的房价正在飙升。

unit

n. 单位，单元，装置，个体，[数]单位数；
例句
The electronic and printing unit has annual sales of about $80 million.
电子印刷部门每年销售额约为8,000万美元。
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
These potatoes are only half cooked.
这些土豆煮得半生不熟。
Hotels cost more in season.
旺季旅馆住宿贵些。
The school board members spend their time disputing and getting nothing done.
学校董事们争论不休，但一事无成。
He will take the visitors over these rooms.
他要带我们参观这些屋子。
parlous state
危险的状态
His acting was quite first-rate
她的演技是一流的。
Thanks to your help, we were successful.
由于你的帮助, 我们得以成功。
We can't get it through the door because of its width.
我们无法使它通过这道门, 因为它太宽了。
You can fight him, but can you beat him?
你可以打他, 但是你能击败他吗?
The man from the gas board came to read the gas meter.
煤气公司派来的人来查煤气表的读数。