胚状体

例句：

1. 1. The development of the embryo is crucial to its survival.
   胚胎的发展对其生存至关重要。
2. 2. Researchers have discovered a new way to grow embryonic stem cells.
   研究人员发现了一种新方法来培养胚胎干细胞。
3. 3. The study focused on the early stages of embryonic development.
   该研究关注了胚胎发育的早期阶段。