名词
中文翻译：骨盆腹膜下间隙
同义词：
['pelvic cavity', "vaginal pouch例句：1. The surgeon performed a thorough examination of the patient's pelvic cavity before surgery.（外科医生在手术前对患者的盆腔进行了彻底的检查。）"]
例句：
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1. The surgeon performed a thorough examination of the patient's pelvic cavity before surgery.
外科医生在手术前对患者的盆腔进行了彻底的检查。
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2.The vaginal pouch is a small space located between the vagina and the rectum.
阴道囊是位于阴道和直肠之间的一个小空间。
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3.During childbirth, the pelvic cavity expands to accommodate the baby's head.
分娩时，盆腔会扩张以容纳婴儿的头部。