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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。
This decree obliges unions to delay strikes.
该法令迫使工会推迟罢工。
Nothing to be got without pains but poverty.
一份耕耘，一份收获。
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。
Supporters of the death penalty argue that it would deter criminals from carrying guns...
死刑的支持者认为它能阻吓罪犯携带枪支。
相关例句
He is a ready writer.
他是一位才思敏捷的作家。
Two dogs had a scrap.
两条狗打架了。
He rose from office boy to managing director in ten years.
他在十年间由办公室勤杂员升至总经理。
Diamonds are pure carbon.
钻石是纯净的碳。
Don't lend yourself to such dishonest schemes.
别参与这种欺诈的勾当。
There are rich deposits of gold in those hills.
那些丘陵里埋藏着丰富的金矿。
His sincerity is not in question.
他的真诚不容置疑。
Everyone dissolved into fits of laughter when they saw my haircut.
看到我的发型，大家都哈哈大笑。
He resented his friend's remark.
他怨恨他朋友所说的话。
Would you like to run to the harbor to look at the ships?
你想不想开车到码头看看船?