Cervix uteri

例句：

1. 1.The cervix is the lower part of the uterus that connects to the vagina.
   子宫颈是子宫的下端，与阴道相连。
2. 2.During childbirth, the cervix dilates and prepares for the birth of the baby.
   分娩期间，子宫颈会扩张，为婴儿出生做好准备。
3. 3. Cervical cancer is a serious condition that can be prevented through regular screenings and early detection.
   子宫颈癌是一种严重的疾病，可以通过定期筛查和早期检测来预防。