Tan Xiangjiang River and drinking water with Hengyang Why no significant drop in water level to maintain it?

与长株潭同饮湘江水的衡阳为什么能够保持水位没有明显下降呢？

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Tan Xiangjiang River and drinking water with Hengyang Why no significant drop in water level to maintain it?

与长株潭同饮湘江水的衡阳为什么能够保持水位没有明显下降呢？

youdao