求翻译：房地产开发投资可分为投资决策期、开发前期、建设期、销售期、交验维保期五个阶段，每个阶段存在的风险不同，且随项目进展而变化，风险管理包括风险识别、风险测度、风险评价和风险控制等内容，运用系统理论方法识别、评估风险因素，做出客观科学的决策，确定最佳处理方案。本文结合ZD公司开发的ZSL生产研发楼项目，对房地产开发项目投资风险进行分析和评价，并提出有针对性的具体解决方案和防范措施。本文主要内容分为六章，按照风险识别、分析、评价、防范和控制、配套管理的逻辑顺序，对房地产开发项目投资风险全过程管理进行了应用研究。是什么意思？

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The property development investment may divide into the investment decision-making time, the development earlier period, the construction period, the sales time,

Real estate development investment may is divided into investment decision period, and development early, and construction period, and sales period, and produce for examination dimension insurance period five a stage, each stage exists of risk different, and with project progress and changes, risk m