exogastrula

例句：

1. 1. The embryonic development of the human body is a complex process involving multiple stages and cell types.
   人类胚胎发育是一个复杂的过程，涉及多个阶段和细胞类型。
2. 2. During the early stages of development, the exogastrula undergoes significant changes in shape and size.
   在发育的早期阶段，外胚层囊胚经历了形状和大小的显著变化。
3. 3. The study of the exogastrula provides insights into the mechanisms underlying cellular differentiation and tissue formation duringembryonic development.
   研究外胚层囊胚有助于了解胚胎发育过程中细胞分化和组织形成的机制。