雌激素酮

例句：

1. 1. Estrogen isa hormone that helps regulate menstruation and fertility.
   雌激素是一种帮助调节月经和生育的激素。
2. 2. Women who take estrogen supplementsmay experience menopause earlier thantheir peers.
   服用雌激素补充剂的女性可能会比同龄人更早经历更年期。
3. 3. The studyfound that estrogen levels in theblood were significantly higher in women with breastcancer.
   研究发现，患有乳腺癌的女性血液中的雌激素水平显著高于正常女性。