音标发音英式音标 [ˈdʌm.fəʊn]美式音标 [ˈdʌm.foʊn]英式发音 美式发音 基本解释没有上网功能的手机。同根派生 英汉例句noun [ C ]The phone was marketed as a very powerful smartphone at dumbphone prices.英英字典剑桥英英字典 a very basic mobile phone that cannot connect to the internet