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How do you make the planets in our solar system?
太阳系内的行星又是由什么组成的？
youdao
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Together they make a familyofnine planets which travel around Sun.
这九个行星一起组成一个家庭，它们围绕着太阳运转。
youdao
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Together they make a familyofnine planets which travel around Sun.
这九个行星一起组成一个家庭，它们围绕着太阳运转。
youdao