英语语法分析

Hemorrhage into the decidua basalis formed retroplacental hematoma.

底蜕膜在出血形成胎盘后血肿。

Hemorrhage into the decidua basalis, formed retroplacental hematoma, lead to the separation of the placenta.

出血进入蜕膜基底，形成胎盘后血肿，导致胎盘分离。

That head bump is now blamed for triggering the hematoma.

那次头部碰撞现在成了引发血肿的主因。