英语词汇“celestial horizon”是什么意思，“celestial horizon”的读音、用法及例句翻译-烛光网

词汇	celestial horizon
释义	celestial horizonn.（名词） A great circle on the celestial sphere having a plane that passes through the center of the earth and is parallel to an observer's horizon. Also called rational horizon 天球地平圈：天球上的一个大圆，有一个通过地球的中心并与观察者的视野平行的平面也作 rational horizon
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