英语词汇“galactic year”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	galactic year
释义	WordReference Random House Unabridged Dictionary of American English © 2024 galac′tic year′, [Astron.] Astronomythe duration of a complete rotation of the Milky Way, approximately 200 million years.
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