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Children's popular science masterpiece "The Secret of the Sea".

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Popular Romance of Mathematical Chemistry in Children's Popular Science Masterpieces (I)

Popular Romance of Mathematical Chemistry in Children's Popular Science Masterpieces (Ⅱ)

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Where is Grandpa's grandfather from?

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The famous children's popular science series Ye Yonglie tells the story of 100 scientists.

The Debate between Rational Numbers and Irrational Numbers in Children's Popular Science Masterpieces

Children's popular science masterpieces and birds sing together.

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