PESIS

例句：

1. 1. The doctor explained the PESIS process to me.
   医生向我解释了分娩过程。
2. 2. She underwent a PESIS at the hospital.
   她在医院进行了分娩。
3. 3. The nurse helped her through the PESIS.
   护士帮助她度过了分娩期。