名词
中文翻译：Unknown
同义词：
['Hubble variable nebula', 'Hubble variable nebulae']
例句：
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1. TheHubble variable nebula is a fascinating object in the night sky.
哈勃变星云是夜空中一个令人着迷的天体。
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2. The Hubble variable nebula is a star that has been observed to be undergoing a change in its luminosity.
哈勃变星云是一个被观察到其亮度正在变化的恒星。
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3. The Hubble variable nebula is a region of space where stars and planets are formed.
哈勃变星云是形成恒星和行星的空间区域。