ignorant a meaning in English

不知道的；无知的

" i am extremely sorry you find me so ignorant a cicerone , " replied morcerf , " but i am reluctantly obliged to confess , i have nothing further to communicate - yes , stay , i do know one thing more , namely , that she is a musician , for one day when i chanced to be breakfasting with the count , i heard the sound of a guzla - it is impossible that it could have been touched by any other finger than her own .
“我很抱歉使您觉得我竟是一个这样无知的向导， ”马尔塞夫答道， “但我不得不承认，我实在再没什么别的事情可以奉告的了。噢，不，有了，我还知道一件事，就是，她是位音乐演奏家，因为有一天，当我在伯爵家里用早餐的时候，碰巧听到一架琴的声音，那种琴声当然只有她才能弹得出来的。 ”