| 单词 | 大圈 |
| 释义 | 〔ecliptic〕A great circle inscribed on a terrestrial globe inclined at an approximate angle of 23°27′ to the equator and representing the apparent motion of the sun in relation to the earth during a year.黄道线：地球仪上刻着的大圈，与赤道平面大致成23°27′的角，代表一年中太阳相对于地球的表象运动 |
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