在长期压力下，他开始出现人格解体症状，感觉自己的身体像机器人一样不真实。

Under prolonged stress, he started experiencing ___depersonalization, feeling as if his body was an unreal machine.

大规模教育系统中，学生常被简化为考号，这种去个性化的做法令人沮丧。

In large education systems, students are often reduced to test numbers, a form of ___depersonalization that feels discouraging.