Alluvial material deposited by a river in its valley (as opposed to that deposited by a glacier or ice sheet).
| 单词 | θ5922 |
| 释义 | the world > the earth > structure of the earth > constituent materials > sediment or alluvium > [noun] > ancient (1) river drift1839 Alluvial material deposited by a river in its valley (as opposed to that deposited by a glacier or ice sheet). |
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