1.According to the data analysis, the large scale and continuous excavating sand from the riverbed, which has caused the riverbed downcutting, water level decline and relative strengthening of tidal action, is the basic and main cause that raises the saline water intrusion in the Peal River network area, but the arid climate and the sea level rise only aggravate the disaster.
咸潮灾害发生前和发生时期进行的大规模采掘河沙活动使三角洲河床普遍大幅度下切，河流水位下降，潮汐作用相对增强，这是引发咸潮的主要原因；而天旱和海平面上升等则使咸潮灾害加重。
2.The dry riverbed finds no thanks for its past.
干河床对它的过去不怀谢意。
3.Terrain: riverbed - loose sand, pebbles and shrubs. Use mountain or cross bike with puncture-resistant tires (or extra layer of inner tubes). Flats are very likely!
地形：河床-松软的沙土地，鹅卵石，灌木。我们建议使用山地车，防刺穿外胎或有较高防刺穿功能的内胎。
4.The main trough of riverbed was deepened by large discharge of the river while silted near the river mouth because the sand brought by current deposited near the mouth after closing the water gate.
经过大流量冲刷,河床主槽加深,但在下游水闸关闭后,水流携带的泥沙在下游沉积,出口附近河床反而出现淤积;
5.The research of bend channel of reach Guide-Lijia Flume from Longyang Flume to Lijia Flume in upstream of the Yellow River is proceeded to present rules of feasibility analysis for navigation between the flumes and the riverbed stability.
摘要对黄河上游龙羊峡至李家峡间的贵德－李家峡河段的蜿蜒河道进行了研究，为蓄水两坝间的通航和河床稳定性问题提供可行性分析依据。
6.They were ramming piles into the riverbed.
他们夯木桩到河床内。
7.The soldiers billowed across the muddy riverbed.
士兵们翻腾过泥泞的河床。
8.There are many pebbles on the riverbed.
河床上有很多卵石。
9.Based on the morphological characteristics of riverbed of tidal estuaries, a calculation formula for the widening rate of the estuarine regulation line is derived.
摘要根据潮汐河口河床形态关系，推导了河口治导线放宽率的计算式。
10.Archaeologists excavated fossilized dinosaur tracks from the riverbed.
考古学家从河床中挖掘出恐龙的足迹化石。
