dumbs 哑的( dumb的名词复数 )；说不出话的；愚蠢的 释义与例句 v. 1. third-person singular simple present indicative of dumb 相关短语 deaf and dumb a. 聋哑的 dumbs down dumbs out dumb down 降低…的难度；(尤指对教科书加以)简化： dumb out dumb dumbs dumb dumb