名词
中文翻译：天球
同义词：
['celestial body', 'celestial object', 'celestial entity']
例句：
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1. The celestial bodies are the stars that we can see with our eyes.
天体是我们用眼睛可以看到的星星。
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2. The celestial bodies are the planets that orbit around the sun.
天体是围绕太阳运行的行星。
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3. The celestial bodies are the moon and the sun.
天体是月亮和太阳。