| 单词 | Orion Nebula |
| 释义 | Orion Nebula [ǝ`rī·ǝn `neb·yǝ·lǝ] ASTRONOMY A luminous cloud surrounding Ori, the northern star in Orion's dagger; visible to the naked eye as a hazy object. Also known as Great Nebula of Orion. |
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