关于太阳系的九大行星你能回答这些测试题吗?
Can you answer these quiz CARDS about the planets in our solar system?
这本书介绍太阳系的九大行星,并且作了深入的探讨,共四十六页。
With colorful illustrations and clear text, this book explores the planets. 46 pages.
关于太阳系里的九大行星,你知道哪些奥秘?
What mysteries do you know about the nine planets in the solar system?
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