... the Celestial City 天堂,天国 a celestial sphere 『天文』天体球 celestial mechanics 天体力学 ...
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The sphere is mounted by its poles (corresponding to the celestial poles) on a metal axis, and can rotate around it.
整个铜球可以绕一根金属轴转动，转动一周代表一个昼夜。
Astronomers have divided the celestial sphere into a total of 88 regions.
天文学家已把天球划分为88个区域。
Its intersection with the celestial sphere will be a great circle -the ecliptic.
它与天球相交处形成一个大圆-黄道。
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