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单词
progradation
释义
WordReference Random House Unabridged Dictionary of American English © 2024
pro•gra•da•tion
(prō′grā dā
′
shən),
USA pronunciation
n.
[
Geol.
]
Geology
seaward growth of a beach, delta, fan, etc., by progressive deposition of sediment by rivers or shoreline processes.
prograde
(
pro
-
1
+ (
retro
)
grade
) + -
ation
1905–10
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更新时间:2025/12/3 2:20:03