河床河岸地质结构对河流地质作用的制约主导着河道演变的趋势。
The restraint of geologic structure of river bed and bank on the rivers geologic action controls the river evolution trend.
一座座传奇式的城堡俯瞰着小河蜿蜒曲折的河道。
有些人管理着大量人群，男性女性都有，还为河道探险人引路，或承担测绘工作。
Some managed large groups of men and women, piloted the explorers' river trail or undertook mapping work.
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