Requiring environmental impact studies prior to construction of any mega-projects.
要求环境影响的研究之前，任何大型项目的建设。
Water conservancy projects, especially some mega-project construction in schistosomiasis endemic areas usually give rise to changes of the ecological environment in the project and downstream area.
水利工程特别是血吸虫病疫区的大型水利工程建设，往往会改变工程区及其下游地区的生态环境。
Water conservancy projects, especially some mega-project construction in schistosomiasis endemic areas usually give rise to changes of the ecological environment in the project and downstream area.
水利工程特别是血吸虫病疫区的大型水利工程建设，往往会改变工程区及其下游地区的生态环境。
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