Take a fascinating tour of the human body! How does your respiratory system work? What kind of bones make up a skeleton? How does food get digested? How many cells does one body contain? Put together the detailed puzzle and read the book to learn all about the cycle of life and the human body!

来一场有趣的人体之旅吧！你的呼吸系统是如何运作的？什么样的骨头组成骨骼？食物如何被消化？一个身体包含多少个细胞？将详细的拼图拼凑起来，然后阅读这本书，以了解有关生命周期和人体的所有知识！