水——是生命之源，是人类生存的根本。地球上的江河湖泊则是水聚汇的容器。如果说水是地球的血液，那么江河湖则是地球的血脉。本书是一部以地理知识为题材的科普读物，内容新颖独特，且借助简洁凝练的文字为您阐释奇观的地理背景和自然成因。阅读本书，可使您足不出户就能观赏全世界的神奇景观，领略大自然的无穷魅力。(Water—is the source of life, the foundation for the survival of human beings. The rivers and lakes on the earth are the containers for water. If water is the blood of the earth, the rivers and lakes are the blood vessels of the earth. This book is a popular science reading with the theme of geographical knowledge. The content is novel and unique. The book interprets the geological background and natural causes of the wonders with succinct and concise words. By reading this book, you can enjoy the sight of the magical landscapes of the world and enjoy the infinite charm of nature at home.)