The birth and development of the contractus played an important part in Roman law and exerted great influence upon the contract system in later age. 契约制度的产生和发展在罗马法中占有重要的地位,并且对后世产生了重大的影响。
Real contract is a concept of Roman Law and it can be regarded as a phase transition into a contractus consensu. 要物契约起初是罗马法上的一个概念,它可以被看成是向诺成契约过渡的一个阶段。