placentiform

例句：

1. 1. The fetus is developing in a placentiform structure within the uterus.
   胎儿在子宫内以胎盘状结构发育。
2. 2.The study focused on the placentiform structures found in the womb.
   该研究专注于子宫中发现的胎盘状结构。
3. 3.The placentiform tissue is responsible for nourishing the fetus during pregnancy.
   胎盘状组织负责在怀孕期间滋养胎儿。