音标发音英式音标 [ˈkɪdz stʌf]美式音标 [ˈkɪdz stʌf]英式发音 美式发音 基本解释极简单的活动（或事情）；小儿科。同根派生 英汉例句noun [ U ]A five-mile bike ride? That's kids' stuff. 骑5英里自行车？那太简单了。英英字典剑桥英英字典 an activity or piece of work that is very easy