mesodermic somite

例句：

1. 1.The mesodermal somite is the first structure to form during gastrulation.
   中胚层索状体是囊胚形成过程中的第一个结构。
2. 2.The mesodermal somite is responsible for forming the body wall and limb buds.
   中胚层索状体负责形成身体壁和肢体芽。
3. 3. The mesodermal somite is a critical component in the development of the nervous system.
   中胚层索状体在神经系统发育中起着关键作用。