The male reproductive system is distinguished by a pair of testes,a pair of vas deferens,a pair of male accessory glands,one ejaculatory duct and copulatory organ.

 
  • 雄性生殖系统由一对睾丸、一对输精管、一对附腺、射精管和交配器组成。
今日热词
目录 附录 查词历史