求翻译：要保持正常的开发赢利,就必须从房地产开发项目的成本控制入手，房地产项目开发建设过程中的成本控制直接关系到开发企业的经济效益。是什么意思？

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It is necessary to maintain normal development profits from real estate development projects must start with the cost control, real estate development and construction projects in the process of cost control directly influences development of enterprise economic efficiency.

Must maintain the normal development profit, must from property development project cost control obtaining, in the real estate project development construction process cost control relate the development enterprise directly the economic efficiency.

To maintain the normal development of the profit, must start with the cost control of real estate development projects, real estate development directly related to the development of cost control in the construction of the economic efficiency of enterprises.

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