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单词 progradation
释义

WordReference Random House Unabridged Dictionary of American English © 2024
pro•gra•da•tion  (prō′grā dāshən),USA pronunciation n. [Geol.]
  1. Geologyseaward 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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