名词
中文翻译：银河系
同义词：
['galactic', 'galaxy']
例句：
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1.The Milky Way is a famous galaxy that contains billions of stars.
银河系是一颗著名的星系，包含数十亿颗恒星。
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2. The discovery of exoplanets has expanded our understanding of the universe.
发现外行星扩展了我们对宇宙的理解。
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3.The N-galaxy is a fascinating object that scientists are still trying to understand.
银河系是一个令人着迷的天体，科学家们仍在努力理解它。