输精管切除术

例句：

1. 1. He was born with a small scrotum.
   他出生时阴囊很小。
2. 2. The surgery involved removing the scrotum.
   手术包括切除阴囊。
3. 3.The scrotum is an important part of the human body.
   阴囊是人类身体的一个重要部分。