estrogen hormone

例句：

1. 1.Estrogens play a crucial role inthe development of female reproductive organs.
   雌激素在女性生殖器官的发展中起着至关重要的作用。
2. 2. The study found that estrogen levels in postmenopausal women were significantly lower than thosein premenopausal women.
   研究发现，绝经后女性的雌激素水平显著低于未绝经的女性。
3. 3. Estrogen therapy is often used to treat conditionssuch as osteoporosis and breast cancer.
   雌激素疗法常用于治疗骨质疏松症和乳腺癌等疾病。