syncytial cell

例句：

1. 1. The syncytial cell is the first stage of human embryonic development.
   合胞细胞是人胚胎发育的第一阶段。
2. 2. During the implantation process, the syncytial cell divides to form a new uterine cavity.
   在植入过程中，合胞细胞分裂以形成一个新的子宫腔。
3. 3.The syncytial cell is responsible for producing hormones that regulate fetal growth and development.
   合胞细胞负责产生激素，调节胎儿的生长和发育。