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Riverbed
01
a channel occupied (or formerly occupied) by a river
例子
Geologists identified kaolinite deposits in the riverbed, evidence of long-term erosion and sedimentation processes.
After the river flooded, a layer of sediment covered the riverbed.
Engineers deepened the riverbed to improve navigation for larger vessels.
They discovered minuscule traces of gold in the riverbed after hours of panning.
The sediment in the river laid a layer of silt down on the riverbed.
