zygotic embryo

例句：

1. 1.The zygotic embryo is the first stage of development in a mammalian pregnancy.
   受精卵胚胎是哺乳动物妊娠的第一个发展阶段。
2. 2. The study of zygotic embryos has led to significant advances in genetic engineering.
   对受精卵胚胎的研究已经导致了遗传工程的重大进步。
3. 3.The zygotic embryo is considered to be the most important stage for human development.
   受精卵胚胎被认为是人类发展最重要的阶段。