Figure 1: the business value stream: linking the value chain and supply chain.
图1：业务价值流：连接价值链和供应链。
Their supply seems to be in a steady stream, never drying.
其源源不断的供应，好像永远也不会枯渴似的。
Traditional main-stream economists think that the supply elasticity of land is zero.
传统的主流经济学家认为，土地的供给是缺乏弹性的，其供给弹性为零。
Traditional main-stream economists think that the supply elasticity of land is zero.
传统的主流经济学家认为，土地的供给是缺乏弹性的，其供给弹性为零。
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