除非你有很好的天文学知识，我并不懂天文学，那就很困难。
Unless you have a good knowledge of astronomy , which I do not, this is difficult.
天文学家常常到天体营去研究天文的奥秘。
The astronomer usually arrive nudist colony to the profound mystery of research astronomy.
天文学家常常到天体营去研究天文的奥秘。
The astronomer usually arrive nudist colony to the profound mystery of research astronomy.
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