For two involved parties to confront each other in the presence of a witness or mediator to clarify the truth of a matter.
小张和小李因一次误会产生争执，他们决定找来共同的朋友，三头对案，把事情的来龙去脉说清楚。
Xiao Zhang and Xiao Li had a dispute over a misunderstanding; they decided to invite a mutual friend to confront each other, clarifying the whole story.
Next Idiom