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单词 centerboard
释义

WordReference Random House Unabridged Dictionary of American English © 2024
cen•ter•board  (sentər bôrd′, -bōrd′),USA pronunciation n. [Naut.]
  1. Nautical, Naval Termsa pivoted fin keel that can be swung upward and aft within a watertight trunk when not in use.
Also called drop keel. Cf. daggerboard. 
  • center + board 1840–50, American.

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