由于采沙破坏了天然河床的平衡状态，可引起长距离河床整体下切，对已有跨河桥梁工程不利。
Because it destroyed the river equilibrium, sand excavation would cause river bed erosion in large scale, which is danger our to the structure across the river.
通过分析重庆江津白沙渗滤取水工程中渗透水水质表明，河水经过天然河床渗滤处理，其中的悬浮物质几乎可以被完全去除，并有较好的除菌效果。
River water of slight pollution and high turbidity was converted into seepage water by filter through which the suspended substance was removed, turbidity was depressed and bacteria reduced.
在电缆管道建成后，许可证持有人须用天然底土修复受影响的蚝涌溪流河床，使其回复原貌。
After cable duct construction, the Permit Holder shall reinstate the affected stream bed of Ho Chung River to its original conditions using natural substratum.
黑河下游河道都是天然河道，断面不规则，属宽浅型沙质河床，河道渗漏量大。
The river courses in the lower Heihe river are all natural ones with irregular cross sections and great seepage, belonging to broad-shallow type of sandy riverbed.
河床天然砂卵砾石层能否作为超高面板坝坝基是该工程的关键技术问题之一。
Whether the natural sand gravel stratum in the river bed would serve as the foundation of the superhigh faced rockfill dam or not was one of the key technical problems of the project.
巧合的是，两个景观设计师同样受天然荒漠现象的启发：建立防止间歇性洪水暴雨次数的河床。
By coincidence, two landscape architects were similarly inspired by a natural desert phenomenon: the streambeds that carry intermittent floodwaters in times of heavy rain.
巧合的是，两个景观设计师同样受天然荒漠现象的启发：建立防止间歇性洪水暴雨次数的河床。
By coincidence, two landscape architects were similarly inspired by a natural desert phenomenon: the streambeds that carry intermittent floodwaters in times of heavy rain.
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