noun🔗Share天文数字， 极大的数字 Any very large number, exceeding normal description."The national debt has risen to quadrillions of dollars, a number so vast it's hard to even imagine. "国家债务已经上升到数万亿美元，这是一个天文数字，大到难以想象。numbermathamountChat with AIVocabulary GamePractice Reading
