| 单词 | galactic year |
| 释义 | galactic yearnoun Astronomy.the duration of a complete rotation of the Milky Way, approximately 200 million years. Words nearby galactic yeargalactic nucleus, Galactico, galactic plane, galactic pole, galactic poles, galactic year, galactin, galacto-, galactobolic, galactocele, galactoid Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 |
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