1、十五的英語是fifteen。
2、fifteen的讀音:英[ˌfɪfˈtiːn],美[ˌfɪfˈtiːn]。
3、[例句]In those days most people left school when they were only fifteen years old.那時候,大多數人上學只上到十五歲。
4、複數:fifteens