淡水

1. 湖泊学研究淡水，尤指湖泊和海洋的生命和现象的科学研究
   The scientific study of the life and phenomena of fresh water, especially lakes and ponds.
2. 过去这些年来，用蒸馏法制取淡水成本一直很高。
   In the past, obtaining fresh water by distillation has always been too expensive.
3. 这个淡水湖里有许多种鱼。
   There are many fish in this freshwater lake.
4. 盐水比淡水浮力大。
   Salt water is more buoyant than fresh water.

水的英语翻译：