celestial sphere
柯林斯詞典
1. N an imaginary sphere of infinitely large radius enclosing the universe so that all celestial bodies appear to be projected onto its surface 天球; 一個想像假設(shè)的包含了整個宇宙的無限大球體，故所有天體都能展示在其表面上
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1. N an imaginary sphere of infinitely large radius enclosing the universe so that all celestial bodies appear to be projected onto its surface 天球; 一個想像假設(shè)的包含了整個宇宙的無限大球體，故所有天體都能展示在其表面上