Today, the development of capitalist country economy, creed of the theory of free market economy that says palpability is Sa Yi, Marshall and Keynesia is collective the result of action.

• 今天 ,资本主义国家经济的发展 ,说明了正是萨伊、马歇尔的自由市场经济理论和凯恩斯主义共同作用的结果。