意定之债
意定之债-
通过比较研究和实证分析，笔者认为，以立法的方式确认单方允诺系意定之债的发生原因之一确有必要，并进一步确立了这一制度得以发生法律效力的构成要件。
Through comparative research and empirical analysis , the author believes that it is necessary for the law to confirm that unilateral promise is one of the reasons that produce obligation . After that , the author analyses the constructive elements of the unilateral promise .