entoblast

例句：

1. 1. The development of the embryo is crucial for the growth and survival of the fetus.
   胚胎的发展对于胎儿的生长和存活至关重要。
2. 2.In embryonic development, cells divide rapidly to form complex structures.
   在胚胎发育过程中，细胞迅速分裂形成复杂的结构。
3. 3.Researchers are studying how embryonic cells can be manipulated to treat diseases.
   研究人员正在研究如何操纵胚胎细胞来治疗疾病。