据专家们说,世界上有10多亿人——占世界人口总数的将近1/5——缺乏安全洁净的饮用水,这个问题在21世纪初将会恶化。 据新近成立的专门研究世界供水情况的一个委员会说,预计到2025年出现缺水的大部分地方位于非洲和中东地区,但是印度、中国的部分地区、秘鲁、英格兰和波兰也将会受到缺水影响。 该委员会说,总共有40个国家可能 According to experts, more than 1 billion people in the world - nearly one fifth of the world population - lack access to safe and clean drinking water, a problem that will worsen early in the 21st century. According to a newly formed committee that specializes in world water supply, most of Africa and the Middle East are expected to be short of water by 2025, but parts of India, China, Peru, England and Poland will also suffer from water shortages influences. The commission said a total of 40 countries are possible