the fact of being separate from and not related to something else

The work finds a fairly complete dissociation between learning and sleep. 这项工作发现学习和睡眠几乎完全没有关系。

The evaluation of materials cannot be carried out in dissociation from (= separately from) the contexts of particular classrooms. 对材料的评估不能脱离（=独立于）特定教室的环境进行。

the action of separating yourself, or considering yourself to be separate, from something or someone

A movement grew, demanding dissociation from the war and for Britain to withdraw political support. 发起了一场运动，要求脱离战争并要求英国撤回政治支持。

Dissociation is thought to occur during and immediately after a traumatic event. 精神分裂被认为是发生在创伤事件期间和之后的。