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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；

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
Everything has been arranged satisfactorily.
一切都得到了令人满意的安排。
I hear laughter all around.
我听到四周的笑声。
The payments on that car loan are in arrears by three months.
购车贷款的偿付被拖欠了三个月。
We have some asparagus for lunch.
我们午饭有些芦笋。
I think he's having an asthma attack.
我想他现在是哮喘病发作了。
The bank has assets of more than ￡1 billion.
该银行有十亿多英镑的资产。
The noise aroused the sleeping guard.
响声把睡着的警卫惊醒了。
He is a man of enormous size and terrifying aspect.
他是一个面目狰狞的彪形大汉。
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。
This is a very perceptive assessment of the situation.
这是一个对该情况的极富洞察力的评价。
She was a popular French music hall artiste in the late 19th century.
她是19世纪后期在法国乐坛上名噪一时的艺术家。
I'll be back at around 5 o'clock.
五点左右我就回来。
We should buy several articles at the shop.
我们在这家商场买点东西。
We talked about such subjects as the weather.
我们谈论了诸如天气之类的话题。