社会福利是一个多元、模糊而又复杂的概念,理论界往往回避给出一个定义。原因之一是:社会福利的产品、对象、功能或目标等属性往往不确定、不清晰,并且经常处于变化之中,对其进行定 Social welfare is a diverse, vague and complex concept, and theorists often avoid giving a definition. One of the reasons is that the attributes of social welfare products, objects, functions or goals are often uncertain, unclear, and often in the midst of change