pelvic diaphragm

例句：

1. 1.The pelvic diaphragm is a thin membrane that separates the abdominal cavity from the pelvic cavity.
   骨盆隔膜是一层薄膜，将腹腔与盆腔分隔开。
2. 2.Pelvic diaphragm dysfunction can lead to infertility and other reproductive issues.
   骨盆隔膜功能障碍可能导致不孕和其他生殖问题。
3. 3. During childbirth, the pelvic diaphragm expands to support the baby's head and neck.
   分娩期间，骨盆隔膜会扩张以支撑婴儿的头部和颈部。