名词
中文翻译：次行星
同义词：
['sub-planet', 'minor planet']
例句：
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1.The discovery of a new secondary planet has sparked excitement among astronomers.
发现一个新的次行星，激发了天文学家们的兴奋。
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2. The study of the secondary planets is crucial for understanding the formation of our solar system.
研究次行星对于理解我们太阳系的形成至关重要。
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3. The secondary planets orbit around the primary star in the constellation Orion.
次行星围绕主星在猎户座中运行。