| 单词 | galactic belt |
| 释义 | Definition of galactic belt in English:galactic beltnoun
OriginLate 19th century; earliest use found in Simon Newcomb (1835–1909). Definition of galactic belt in US English:galactic beltnoun
OriginLate 19th century; earliest use found in Simon Newcomb (1835–1909). |
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