专家们称,在气候变化使旱灾,洪灾和疾病问题恶化之前,全球必须在大坝和管道上增加一倍的投入。“非洲基础设施极度缺乏,在未来半个多世纪里,非洲国家必须将其国内生产总值的预期增长部分全部投入水利建设,蓄水和供水才能勉强达到相对适中的水平。” Experts say the world must double its dams and pipelines until climate change aggravates drought, floods and disease problems. “In the midst of more than half a century of serious lack of infrastructure in Africa, African countries must devote part of their expected growth in gross domestic product to water conservancy construction in order to achieve relatively modest levels of water storage and water supply.” "