難問 [なんもん] /(n,vs) perplexity/difficult question/difficult problem/(P)/EntL1461130X/ 難問 なんもん 名 schwierige Frage; schwieriges Problem. ⇒ 難題 (なんだい) HE 難問 [なんもん] /(n) question difficile, ardue/colle (poser une)/1461130
