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An astronomer can determine the brightness of each star.

天文学家能够测定每颗恒星的亮度。

柯林斯例句

Early astronomers thought that our planet was the centre of the universe.

早期的天文学家认为我们的星球是宇宙的中心。

柯林斯例句

Space scientists and astronomers have taken another step forwards.

航天科学家和天文学家又取得了进展。

柯林斯例句

A new star attracted the notice of the astronomer.

新发现的一颗星引起了那位天文学家的注意.

《简明英汉词典》

Astronomers used to ask why only Saturn has rings.

天文学家们过去一直感到奇怪,为什么只有土星有光环.

《简明英汉词典》

The astronomers were taking an observation of Jupiter.

天文学家们正在观测木星.

《简明英汉词典》

Astronomers know that Pluto and Triton have nearly the same size, mass, and density.

天文学家知道冥王星与海卫一拥有几乎相同的体积、质量与密度。

柯林斯例句

Astronomers will have to collect more spectra from these stars to confirm their suspicions.

天文学家们必须要从这些恒星上采集更多的光谱来证实他们的推想。

柯林斯例句

Astronomers can calculate when there will be eclipses of the sun and moon.

天文学家可以算出何时发生日食和月食.

《简明英汉词典》

Archaeoastronomers have greatly expanded their search for such ancient sites.

考古天文学家们广泛开展了对这类古代遗址的探索.

辞典例句

To detect shorter wavelengths, astronomers must put instruments above the earth's atmosphere.

要探测到更短的波长, 天文学家们就必须把仪器送到地球大气层以外去.

辞典例句

The ancient astronomers divided zodiac into 12 equal segments.

古代天文学家把黄道带分为12等分.

辞典例句

Astronomers have found that many stellar objects contain hydrogen atotms.

天文学家们已经发现,许多恒星上含有氢原子.

辞典例句

Astronomers have breached the powerful armor of the earth's atmosphere.

天文学家摆脱了地球大气的严重束缚.

辞典例句

The telescope can be set on any star of interest to astronomers.

望远镜可以对准任何一颗天文学家感兴趣的星.

辞典例句