early reproductive stage

例句：

1. 1. The studyof the early reproductive stages iscrucial for understanding human evolution.
   研究早期生殖阶段对于理解人类进化至关重要。
2. 2. During the earlyreproductive stages, the female mouselays eggs in her uterus.
   在早期生殖阶段，雌性老鼠在她的子宫里产卵。
3. 3. The researchers found that theearly reproductive stages are influenced byenvironmental factors.
   研究人员发现，早期生殖阶段受到环境因素的影响。