南四湖是山东省的重要水源地，也是南水北调东线工程的主要调蓄湖泊。
The Nansihu Lake is an important water source in Shandong Province and is one of the main impounded lakes in the South-to-North Water Diversion East Route Project.
南四湖是山东省的重要水源地，也是南水北调东线工程的主要调蓄湖泊。
The Nansihu Lake is an important water source in Shandong Province and is one of the main impounded lakes in the South-to-North Water Diversion East Route Project.
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