在压力下，她的行为退化到了幼儿时期的状态。

Under stress, her behavior ___regressed to that of a toddler.

剔除异常值后，模型的表现不再倒退。

After removing the outliers, the model's performance no longer ___regresses.

病人停止治疗后，病情开始倒退到之前的严重状态。

The patient's condition started to ___regress to its previous severe state after stopping treatment.