一个婴儿有多少块骨头的英文怎么写？
编辑：自学文库
时间：2024年03月09日
An infant generally has around 300 bones. However, as the baby grows, some of these bones fuse together, resulting in a reduction in the overall number of bones. By the time a child reaches adulthood, they typically have 206 bones. The high number of bones in infants is primarily due to the fact that their skeleton is not fully developed. As they grow, certain bones such as those in the skull and spine fuse, resulting in a decrease in bone count. It is fascinating to see how the human body undergoes such transformations during the development phase, ultimately leading to a more mature skeletal structure.