spermatic vein

例句：

1. 1.The spermatic vein runs from the testicles to the scrotum.
   输精管静脉从睾丸到阴囊。
2. 2.This surgery involves removing the spermatic vein to prevent infection.
   这种手术涉及切除输精管静脉以防止感染。
3. 3. The spermatic vein is responsible for carrying waste products from the testicles to the scrotum.
   输精管静脉负责将睾丸产生的废物从睾丸运输到阴囊。