| 单词 | Crab Nebula |
| 释义 | Crab Nebula (once / 337695 pages) n WORD FAMILY Crab Nebula USAGE EXAMPLESA composite image from three space telescopes shows the intricate detail in the Crab Nebula, the remains of a star that exploded. National Geographic(Jul 25, 2016) This Hubble picture of the Crab Nebula shows its central neutron star—the rightmost of the two bright stars in the middle of the frame. National Geographic(Jul 07, 2016) The Crab Nebula is the remains of a massive star that blew itself up. Carl Sagan, Cosmos(1980) n a remnant of a supernova detected first in 1054 AD Exp supernova a star that explodes and becomes extremely luminous in the process |
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