They decided on a trial separation to see if they could resolve their issues.

separation 是名词，来自动词 separate（分开、分离），指"分开的状态或行为"。 trial separation 指夫妻暂时分开生活但不正式离婚的状态，目的是通过这段分开的时间来评估婚姻关系是否能够修复。