celestial sphere
短语n. 天球（一个想像假设的无限大球体）; 天球仪
发音
其它
词形变化
celestial spheres
复数
celestial spheres
别名
Celestial Sphere
释义与例句
n.
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1.
The apparent outer limit of space; an abstract sphere of infinite radius which serves as the imaginary backdrop for celestial objects, and of which the visible sky is one hemisphere.
天球
天文 -
2.
One of the nested concentric transparent spheres around the Earth in which celestial bodies such as stars and planets were said to be embedded in ancient and medieval Western cosmology, and whose rotation was said to produce the motion of such bodies.