Astronomy. Originally: a bright core forming the main part of the visible head of a comet or (occasionally) a meteor. Now: spec. the solid central…
| 单词 | θ1170 |
| 释义 | the world > the universe > constellation > comet or meteor > comet > [noun] > head > nucleus (1) nucleus1668 Astronomy. Originally: a bright core forming the main part of the visible head of a comet or (occasionally) a meteor. Now: spec. the solid central… |
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