单词	black dwarf
释义	black dwarf noun plural black dwarfs : a very small cooled remnant of white dwarf that emits no detectable light Example Sentences Recent Examples on the Web These positrons would ever-so-slowly destroy some of the electrons in a black dwarf’s center and weaken its degeneracy pressure. Adam Mann, Science | AAAS, 11 Aug. 2020 But eventually, these relics cool off and become a black dwarf. Adam Mann, Science | AAAS, 11 Aug. 2020 These tiny, denser stellar husks eventually fade into elusive black dwarf stars, which are nearly undetectable by astronomers. Jennifer Leman, Popular Mechanics, 13 June 2020 Right before either going supernova or turning into a black dwarf, dying stars turn into white dwarves. Jennifer Leman, Popular Mechanics, 1 Apr. 2020 Word History First Known Use 1925, in the meaning defined above
随便看	take a walk take a wander take a weight off someone's mind take a whack at take a whiz take a wife take a wife/husband take a wrong turn take a/its toll take a/one's cue from take a/the day off take aback take about take account of take action take advantage of take after take against take aim take aim at take apart take as a sign take as given take as gospel take as read

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