| 单词 | celestial equator |
| 释义 | celestial equator in British Englishnoun the great circle lying on the celestial sphere, the plane of which is perpendicular to the line joining the north and south celestial poles Also called: equinoctial, equinoctial circlecelestial equator in American English the great circle formed on the celestial sphere by extending the plane of the earth's equator |
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