uterine veins

例句：

1. 1. The doctor performed an operation to remove the uterine veins.
   医生进行了一次手术来移除子宫静脉。
2. 2. During childbirth, the uterine veins are dilated to allow for easier delivery.
   分娩期间，子宫静脉会扩张以便更容易的分娩。
3. 3. The uterine veins play a crucial role in blood circulation and reproductive health.
   子宫静脉在血液循环和生殖健康中起着关键作用。