testas

例句：

1. 1.He had his testes removed for cancer treatment.
   他因癌症接受了睾丸切除手术。
2. 2.The testis is responsible for producing sperm.
   睾丸负责产生精子。
3. 3. During puberty, the testes grow and develop.
   青春期，睾丸会生长和发育。