spermatogenic cycle

例句：

1. 1. The study of spermatogenic cycle is crucial for understanding human reproduction.
   研究精子生成周期对于理解人类生殖至关重要。
2. 2.During the spermatogenic cycle, spermatogonia undergo a series of developmental changes.
   在精子生成周期中，精原细胞经历了一系列的发育变化。
3. 3. The spermatogenic cycle is influenced by various factors, including genetics and environmental conditions.
   精子生成周期受到多种因素的影响，包括遗传因素和环境条件。