せんもんちしき
expertise; specialized knowledge; technical knowledge; expert knowledge
Noun
彼かれの専門知識せんもんちしきの欠落けつらくが彼かれの昇進しょうしんを阻はばんだ。
His lack of technical knowledge kept him from being promoted.
この種しゅの専門知識せんもんちしきは日常生活にちじょうせいかつとはほとんど関係かんけいがない。
This kind of specialized knowledge has very little to do with daily life.