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单词 date of reference
释义
Date Of Reference
nnoun.time(astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is recorded
Topic:astronomyuranology
Synset:epoch
Hypernyms:date
Inherited Hypernyms:epochdatecalendar daytime periodfundamental quantitymeasureabstractionentity
Inherited Hypernyms:epochdatecalendar monthtime periodfundamental quantitymeasureabstractionentity
Inherited Hypernyms:epochdatecalendar yearyeartime periodfundamental quantitymeasureabstractionentity
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