标签：Irrigation 相关文章
By Uma Ramiah Dakar 21 May 2008 A year-old project in Benin has shown that harnessing the power of sunlight could provide long-term solutions to hunger in underdeveloped nations. A six-month dry season in the Kalale District of Benin used to wreak ha
发表于:2019-01-13 / 阅读(78) / 评论(0)
VOA标准英语2008年（五月）
VOA标准英语2008年（五月）