英語翻譯
The report by an international group says that more than half of the major rivers are threatened by pollution or too much used by pepole.The warning was given by the World Commission on Water for the Twenty-first Century.The group was established to study the conditions of the world's supply of water.
Problems with the world's fresh water supply affect wildlife as well as pepole.In 1998,twenty-five million pepole became refugees from environmental disasters as a result of flooding,pollution and other water problems