[234] Watersheds / 流域, 2004
The river systems and drainage basins on every continent have created watersheds of the world’s fresh water. Fueled by precipitation, and directed by continental geography, watersheds constitute the major reservoirs of fresh water and the channels through which water flows to the ocean.
位於每個大洲上的河川系統與流域盆地形成了世界的淡水流域。加上降水的推動，以及來自於大洲的地理牽引，流域構成了主要的淡水集水區，以及形成了引導水流入海洋的渠道。
