The astronomers were taking an observation of Jupiter.
们正在观测木星。
者；
;;;;;台;;;;者;The astronomers were taking an observation of Jupiter.
们正在观测木星。
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。
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。
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