placenta basin

例句：

1. 1. The placenta basin is an important part of the fetal development process.
   胎盘盆地是胎儿发育过程中的一个重要部分。
2. 2.During labor, the placenta basin can become a source of infection for the mother.
   在分娩过程中，胎盘盆地可能成为母亲感染的来源。
3. 3. The placenta basin plays a crucial role in the exchange of nutrients between the mother and the fetus.
   胎盘盆地在母体和胎儿之间营养物质交换中起着至关重要的作用。