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yu wei shen gong
Author(s): 
Pages: 12-13
Year: Issue:  5
Journal: Ocean World

Abstract: 鱼类的尾巴形态多样,妙用无穷。它既是鱼体的平衡器,并且在游泳时可起到舵的作用。除此之外,它还有许多奇功妙用哩!
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