论文部分内容阅读
一些开发机构(如世界银行和美国国际开发署)及许多国家政府对数百个水土保持项目投资中,梯田是其广泛采用的一
Of the hundreds of development projects (such as the World Bank and the U.S. Agency for International Development) and many national governments investing in hundreds of soil and water conservation projects, terraces are widely used