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单词 astronomical clock
释义

WordReference Random House Unabridged Dictionary of American English © 2024
astronomical clock, 
    1. a clock indicating or representing the movements of the sun or planets, the phases of the moon, or the sky visible at a given time, used as a means of establishing time or for additional information, as locating celestial bodies or timing their movement.
    2. a clock used for observing the apparent time of the meridian passages of heavenly bodies.
    • 1855–60

Collins Concise English Dictionary © HarperCollins Publishers::
astronomical clock n
  1. a complex clock showing astronomical phenomena, such as the phases of the moon
  2. any clock showing sidereal time used in observatories
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