flooded area in Yongding River 永定河泛区
Yongding River Basin 永定河流域
Yongding River sand land 永定河沙地
the Yongding River Basin 永定河流域
Beijing City of Yongding River 北京市永定河
The upper and middle parts of the two most importantalluvial fans, which are the Yongding River and Chaobai River, has always been the main watersupply sources, and are taken as two large groundwater reservoir.
尤其永定河、潮白河两大冲洪积扇中上部一直是北京地区主要的地下供水水源地，被视为城市供水的两大地下水库。
参考来源 - 北京地区水资源联合调蓄工程实践方案研究After discussion and consulting the landscape planning cases of waterfront area in developed countries, then study the landscape of Yongding River in Miao Fengshan town of Men Tougou district in Beijing. Reviewed its history.
以北京市门头沟区妙峰山镇永定河为例，具体分析了它的景观环境特征，回顾了它的历史演化过程，分析和研究了这段滨水区潜在的开发价值，以及时代赋予的开发机遇，并指出了滨水景观规划过程中的基点和难点。
参考来源 - 北京滨水区景观规划的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
以上来源于: WordNet
Then suddenly we saw the green Yongding River in the valley below.
接着，山谷下碧绿的永定河突然出现在眼前。
Winding its way through the northwest of Beijing, Yongding River is the biggest river in the city.
蜿蜒于京城西北的永定河是北京最大的河流。
Sudies on the historical forest change in Yongding River Basin have found that Liaojin Dynasty is the turning point.
研究历史上永定河流域森林变迁情况，发现辽金时代是一个转折点。
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