求翻译：由于马里共和国经济发展相对滞后，能源极为缺乏，工程所需的各种建材全靠进口，砂石料也较缺乏，价格昂贵，修建以水泥、钢筋和砂石为主要原料的灌溉工程成本较高，严重阻碍了马里蓄水工程及工程节水工程的配套建设。是什么意思？

Due to the economic development of the Republic of Mali is lagging behind, the energy is extremely lacking , various building materials needed for the project entirely on imports, the lack of sand and gravel are more expensive, higher construction costs of irrigation projects in the cement , steel a

正在翻译，请等待...

Because the Republic of Mali economy development relative lag, the energy lacks extremely, the project needs each kind of building materials depend entirely on the import, the granulated substance stone material also lack, the price is expensive, constructs take the cement, the steel bar and the san

正在翻译，请等待...

正在翻译，请等待...