The astronomers were taking an observation of Jupiter.
天文
们正在观测木星。
者；天文
词;;;;;;;;者;The astronomers were taking an observation of Jupiter.
天文们正在观测木星。
Astronomers used to ask why only Saturn has rings.
天文们过去一直感到奇怪,为什么只有土星有
。
Astronomers can accurately foretell the date,time,and length of future eclipses.
天文能精确地预告未来日食月食的日期、时刻和时长。
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