以下为句子列表：
英文: All the freshwater ecosystems can be found within a watershed—a set of habitats that drain into a single body of water such as a big lake or the ocean.
中文: 在任何一个流域里都可找到淡水生态系统，它是动植物的栖息地，水经它流入一个单一水体，如大湖或海洋。
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英文: It protects freshwater ecosystems by reducing the amount of water extracted from rivers and lakes.
中文: 此保障了新鲜水的生态系统，藉由减少水从河川及湖泊的的压榨量而来。
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