竞争均衡解决方案的存在与规范经济学或福利经济学之间的关系也许同样重要。
Perhaps as important is the relation between the existence of solutions to a competitive equilibrium and the problems of normative or welfare economics.
You are not the opinion of somebody who doesn't know you or care about you.
森林不需要我们，而是我们需要森林。
实际发展水平与潜在发展水平之间的距离，前者由独立解决问题决定，后者由在成人指导下或与更有能力的同伴合作解决问题决定。