freshwateradj.淡水的;内河(航行)的n.淡水
freshwater planarian淡水涡虫
freshwater community淡水群落
freshwater resources淡水资源
freshwater snake skin水蛇皮
freshwater ecosystems淡水生态系统
freshwater succession淡水消长;淡水演替
freshwater Rhodophyta淡水红藻
freshwater snake gall水蛇胆
freshwater planarians淡水涡虫
freshwater snake meat水蛇