单词 | astronomical clock |
释义 | astronomical clocknoun1 : a high-precision clock (such as a Riefler clock or a quartz-crystal clock) used in an astronomical observatory to time the movements of celestial bodies or assist in locating them or to serve as the basis of standard time 2 : a clock with mechanism and dials for indicating various astronomical phenomena (such as phases of the moon, movements of the planets) |
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