embryo nucleus

例句：

1. 1. The study of embryonic development is crucial for understanding the origins of life.
   研究胚胎发育对于理解生命的起源至关重要。
2. 2. The researchers found that the embryonic cells were developing normally.
   研究人员发现胚胎细胞正常发育。
3. 3. The scientists are trying to understand how the embryonic nucleus divides during fertilization.
   科学家们试图了解受精过程中胚胎核是如何分裂的。