used to describe words produced without any mistakes, or a person who is able to repeat a particular

中文解释

一字不差的；能一字不差地背出的；滚瓜烂熟的 His mother rehearsed his lines with him and by the time the play opened he was letter-perfect. 他妈妈跟他对台词，到演出开始时他已经背得滚瓜烂熟了。