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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。
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
Every scrap of land is used for growing food.
每一小片土地都种上了食物。
She treats all her students alike.
她对她所有的学生都同样看待。
The train was a special for the football game.
那班火车是为足球赛开的专车。
The captain set his soldiers various exercises.
上尉让他的士兵做各种操练。
subsoil cultivator
深耕松土机
This loose screw needs a turn or two.
这只松动的螺钉需要旋动一两下。
He is bending down to tie his shoelaces.
他正弯下腰系鞋带。
These are the highest distinctions that have ever been given by our government.
这些是我国政府迄今授予的最高荣誉称号。
The seeds that had been sown were almost completely washed away by a sudden downpour.
已经播下的种子几乎被一场突如其来的暴雨全冲走了。
No one should feel inhibited from taking part in the show.
任何人都不该觉得不好意思参加表演。