英语词汇“vernal equinox”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	vernal equinox
释义	Word Frequency vernal equinox noun 1. the time at which the sun crosses the plane of the equator towards the relevant hemisphere, making day and night of equal length. It occurs about March 21 in the N hemisphere (Sept 23 in the S hemisphere) 2. a. astronomy the point, lying in the constellation Pisces, at which the sun's ecliptic intersects the celestial equator b. the time at which this occurs as the sun travels south to north (March 21)
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