“抗…的”的英语？

外源性雌激素:长期暴露与无拮抗的雌激素环境下可导致内膜增生过长.Exogenous estrogen . Continuous exposure to unopposed estrogen results in endometrial hyperplasia.摘要支抗的控制一直是正畸领域的难点.The control of anchorage has been a difficult question orthodontics.把稀缺资...