vulgar fraction
noun [ C ] mathematics specialized uk/ˌvʌl.ɡə ˈfræk.ʃən/ us/ˌvʌl.ɡɚ ˈfræk.ʃən/
普通分数（由一条横线和横线上下各一个数字组成的分数）
a fraction in which there is a horizontal line with one number above it and one number below it
Synonym: common fraction
Compare: improper fractionproper fraction