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单词 hadal
释义

WordReference Random House Unabridged Dictionary of American English © 2024
ha•dal  (hādl),USA pronunciation adj. 
  1. Oceanographyof or pertaining to the greatest ocean depths, below approximately 20,000 ft. (6500 m).
  2. Oceanographyof or pertaining to the biogeographic region of the ocean bottom below the abyssal zone.
  • Had(es) + -al1 1955–60

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