blastocyst stage

例句：

1. 1. The embryology lab at the university is studying the blastocyst stage of development.
   大学里的胚胎学实验室正在研究发育的囊胚阶段。
2. 2.During the first trimester, the blastocyst stage is crucial for fetal growth.
   在怀孕的前三个月，囊胚阶段对于胎儿的生长至关重要。
3. 3. The researchers found that the blastocyst stage was a critical period for embryonic development.
   研究人员发现，囊胚阶段是胚胎发育的关键时期。