高耸的山峰升得这高，低洼的湖底沉得这低，阔而广，好河床——。
So high as heaved the tumid hills, so low Down sunk a hollow bottom broad and deep, Capacious bed of waters.
一龙戏九珠点缀在从龟背山至飞云洞的山槽里，是嶙峋的河床上低旋着的一溜九个喀斯特黑洞。
It is nine serial karst holes lying on the jagged river bed from the Guibei Mountain to the Clouds Flying Cave.
而河床地形变化引起的三角洲河网区潮汐动力增强，则是感潮河段低水位上升的主要原因。
The strengthening of the tidal power caused by the significant topographic change is responsible for the rise of the low water levels in the tidal reach.
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