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单词 librational
释义

WordReference Random House Unabridged Dictionary of American English © 2024
li•bra•tion  (lī brāshən),USA pronunciation n. [Astron.]
  1. Astronomya real or apparent oscillatory motion, esp. of the moon.
  • Latin lībrātiōn- (stem of lībrātiō) a balancing. See librate, -ion
  • 1595–1605
li•bration•al, adj. 

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