In discussing the several tort undertaking with unreal joint liability, this article poses the concept of unreal liability and the constuction of several tort undertaking unreal jiont liability.

• 在承担补充责任的数人侵权行为中，论述了补充责任的概念、承担补充责任数人侵权行为的构成以及与其他数人侵权行为的区别。