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单词
aggradational
释义
WordReference Random House Unabridged Dictionary of American English © 2024
ag•grade
(ə grād
′
),
USA pronunciation
v.t.,
-grad•ed, -grad•ing.
[
Phys. Geog.
]
Geography
to raise the grade or level of (a river valley, a stream bed, etc.) by depositing detritus, sediment, or the like. Cf.
degrade.
1895–1900;
ag
- +
grade
ag•gra•da•tion
(ag′rə dā
′
shən),
USA pronunciation
n.
ag′gra•da
′
tion•al
,
adj.
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更新时间:2025/7/31 21:37:54