spermidium

例句：

1. 1. The spermatogenic cells are responsible for the production of sperm.
   生精细胞负责产生精子。
2. 2. The study of spermatogenesis is crucial for understanding human reproduction.
   研究生精过程对于理解人类生殖至关重要。
3. 3. The sperm count in semen analysis is used to diagnose male infertility.
   精液分析中的精子计数用于诊断男性不育症。