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单词 platonic year
释义

WordReference Random House Unabridged Dictionary of American English © 2024
Platon′ic year′, [Astron.]
  1. Astronomya period of about 26,000 years, equal to the time required for a complete revolution of the equinoxes. Also called great year. Cf. precession of the equinoxes. 
  • 1630–40

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