noun🔗Share流星体，陨星体 A relatively small (sand- to boulder-sized) fragment of debris in a star system that produces a meteor when it hits the atmosphere"Astronomers study meteoroids in space to better understand where they come from and how they might eventually become meteors in our atmosphere. "天文学家研究太空中的流星体（也就是在太空中漂浮的小石块或碎片，当它们进入地球大气层时就会变成流星），以便更好地了解它们的来源以及它们最终如何变成我们大气层中的流星。astronomyspacescienceChat with AIVocabulary GamePractice Reading
