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单词 outwash
释义 outwash
[`au̇t´wäsh]
GEOLOGY
1. Sand and gravel transported away from a glacier by streams of meltwater and either deposited as a floodplain along a preexisting valley bottom or broadcast over a preexisting plain in a form similar to an alluvial fan. Also known as glacial outwash; outwash drift; overwash.
2. Soil material washed down a hillside by rainwater and deposited on more gently sloping land.
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