| 单词 | orientale basin |
| 释义 | Orientale BasinOrientale Basin(or-ee-en-tah -lee, oh-ree-) The youngest lunar basin, only partly filled by mare lava. The concentric ring structure of mountains and the ejecta blanket – the Hevelius formation – are exceptionally well preserved. Orientale is situated on the western limb of the Moon and is visible from Earth only at times of favorable libration. |
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