dumb /dʌm/ adj. 不会说话的,哑的;沉默的,不肯讲话的:dumb show 哑剧;dumb bell 哑铃;dumb from birth 天生的哑巴;deaf and dumb children 聋哑儿童 He remained dumb, refusing to answer. 他保持沉默,拒绝回答。