chick embryo amnoitic sac

例句：

1. 1. The chickembryo was carefully placed in the incubator to monitor its development.
   将鸡胚小心地放入孵化器中以监测其发育。
2. 2. The researchers found that the amnoitic sac played a crucialrole in the process of egg formation.
   研究人员发现，囊袋在蛋形成过程中起着至关重要的作用。
3. 3. The chick embryo'sdevelopment is closely monitored by scientists to ensureoptimal conditions for growth.
   科学家密切监控鸡胚的发育，以确保为成长提供最佳条件。