A project contains one integration stream and zero or more development streams.
项目包含了一个集成流和零个和多个开发流。
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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