lamellate placentation

例句：

1. 1. The fetus is developing within the amniotic sac, which is lined with lamellate placentation.
   胎儿在羊水中发育，羊水被绒毛膜着床覆盖。
2. 2.Lamellate placentation plays a crucial role in the development of the fetus.
   绒毛膜着床在胎儿发育中起着至关重要的作用。
3. 3. The study of lamellate placentation has led to new insights into the mechanisms underlying human pregnancy.
   对绒毛膜着床的研究为理解人类妊娠的机制提供了新的见解。