Riveri里韦里
rivern.河;江;河流;水道
River cross- over河流穿越
river feeder system内河疏运系统
river straightening河道改直,河道裁弯取直
river bed evolution河床演变
river sediment load河流输沙量
river in urban area城区河流
river flood control河川防洪
river-snail sheil田螺壳
river water quality河流水质
riverbed adjustment河床调整