tunicae of spermatic cord

例句：

1. 1.The testicles are responsible for producingsperm.
   睾丸负责产生精子。
2. 2. Thescrotum is thecovering over the testicles.
   阴囊是睾丸的覆盖物。
3. 3.He removed his scrotum to reveala tumor.
   他切除了阴囊以揭示一个肿瘤。