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单词 solar day
释义

WordReference Random House Unabridged Dictionary of American English © 2024
so′lar day′, 
    1. Astronomythe time interval between two successive transits by the sun of the meridian directly opposite that of the observer;
      the 24-hour interval from one midnight to the following midnight.
    2. [Law.]the period of time from sunrise to sunset.
    • 1755–65

Collins Concise English Dictionary © HarperCollins Publishers::
solar day n
  1. the period of time during which the earth makes one complete revolution on its axis relative to the sun
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更新时间：2025/8/1 6:05:44