他宣布从政治活动中退出，专注于家庭生活。

He announced his ___disengagement from political activities to focus on family life.

维修前，必须先完成离合器的分离。

Before repairing, make sure to perform the ___disengagement of the clutch.

她表现出明显的情感疏离，对朋友的困境漠不关心。

Her obvious ___disengagement showed as she remained indifferent to her friend's struggles.