英语词汇“astronomical twilight”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	astronomical twilight
释义	WordReference Random House Unabridged Dictionary of American English © 2024 as′tronom′ical twi′light, Astronomyeither of two periods of partial darkness, after sunset or before sunrise, when the center of the sun is more than 6° but less than 18° below the horizon.
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