名词
中文翻译:发射星云
同义词:
['ejected nebula', 'ejected gas cloud', 'ejected star cluster']
例句:
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1. The emission nebula is a fascinating object in the night sky.
发射星云是夜空中一个令人着迷的天体。
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2. Astronomers have been studying the emission nebula for decades.
天文学家们已经研究这个发射星云几十年了。
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3. The emission nebula is believed to be a remnant of a supernova explosion.
人们认为发射星云是超新星爆炸的遗迹。