heavenly sphere 中文意思是什麼
heavenly sphere
解釋
天球天穹-
An imaginary sphere of infinite extent with the earth at its center on which the stars, planets, and other heavenly bodies appear to be located
以地球球心為中心,且具有很大半徑的假想圓球。想象中,所有天體都附著在天球上。
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