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...the division of the stars into six classes of brightness.是什么意思？

...the division of the stars into six classes of brightness.

按照亮度将恒星分为6个等级

相关词汇
the division of stars into six classes brightness

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；
例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

division

n. 分开，分隔，[数]除法，部门，[军]师；
例句
The team has accustomed itself to the pace of first division rugby...
球队适应了英式橄榄球甲级联赛的节奏。

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；
例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

stars

abbr. specialized training and reassignment students 经过专门训练后再分配的学生，stationary automotive road stimulator (Toyota) 汽车公路固定刺激物（丰田汽车）；n. 星( star的名词复数 )，明星，（尤指旅馆或餐馆的）星级，星象（根据人出生时天体的位置而描述的命运）；
例句
Ptolemy charted more than 1000 stars in 48 constella-tions...
托勒密绘制了48个星座1,000多颗恒星的星位图。

into

prep. （表示方向）进入…中，（表示所属）输入，（表示状态）进入…状态，（表示时间）持续到；
例句
By 1838, the abolitionists had shamed parliament into ending slavery in British colonies...
到1838年，废奴主义者迫使议会出于道德压力而废除了英国殖民地的奴隶制。

six

n. 六，六个，六岁，六点；num. 六，六个；
例句
...the acquittal of six police officers charged with beating a suspect...
对6名被控殴打嫌犯的警官作出的无罪判决

classes

n. 班( class的名词复数 )，等级，阶级，种类；
例句
Part-time English classes are offered. In addition, students can take classes in word-processing and computing...
开设了非全日制的英语班。另外，学生可以修读文字处理和计算机课程。

brightness

n. 亮度，明亮，光泽度，灯火通明；
例句
An astronomer can determine the brightness of each star.
天文学家能够测定每颗恒星的亮度。
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
Although crimes against visitors were falling, the levels of crime were still too high for comfort.
尽管针对游客的犯罪活动有所减少，但犯罪率还是太高，令人担忧。
His face was covered with pimples.
他满脸粉刺。
He eased his foot off the accelerator.
他松开了油门。
He blew his top after airport officials refused to let him on a plane.
机场工作人员拒绝让他登机之后，他勃然大怒。
IBM is considered the bellwether stock on Wall Street.
国际商用机器公司的股票行情被视为华尔街股市的风向标。
...a medley of traditional songs.
传统歌曲集锦
By the time he died, he was a millionaire.
到他去世的时候，他已经是一位百万富翁了。
Diamond is the crystalline form of the element carbon.
钻石是碳元素的晶体结构。
The modern Russian alphabet has 31 letters...
现代俄语字母表有31个字母。
Stone Age settlers fashioned necklaces from sheep's teeth.
石器时代的移居者用羊的牙做成项链。