英语语法分析

Bleeding; Delivery; Placenta; Previa; Uterine inertia.

出血；分娩；胎盘，前置；宫缩乏力。

The diagnosis and treatment of placenta previa are discussed.

本文对前置胎盘的诊断和处理进行了讨论。

Placenta previa occurs 6 to 15 times more often after a woman has had an abortion.

在女性人流后前置胎盘发生率会6 - 15倍于常人。