astronomers can gauge the star's intrinsic brightness.
可以判断出星星的内在亮度。
者；
;;;;;台;;;;者;astronomers can gauge the star's intrinsic brightness.
可以判断出星星的内在亮度。
a most unusual astronomer inasmuch as he was deaf mute.
鉴于他是聋哑人，他是个十分不同寻常的。
astronomers calculating the positions of the planets.
计算行星的位置。
The astronomers were taking an observation of Jupiter.
们正在观测木星。
Astronomers can calculate when there will be eclipses of the sun and moon.
可以算出何时发生日食和月食。
Astronomers can accurately foretell the date,time,and length of future eclipses.
能精确地预告未来日食月食的日期、时刻和时长。
Astronomers used to ask why only Saturn has rings.
们过去一直感到奇怪,为什么只有土星有光环。
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