説とき示しめす

godan verb (-su)

explain and demonstrate; expound

Used when someone explains a concept, method, or truth while also demonstrating or making it clear, often in a didactic or persuasive context. Slightly formal and literary.

• 先せん生せいは生せい徒とたちに実じっ験けんの手て順じゅんを説とき示しめした。

  The teacher explained and demonstrated the experimental procedure to the students.

• 彼かれは自じ説せつの正ただしさを説とき示しめそうと熱ねつ弁べんをふるった。

  He spoke passionately, trying to expound the correctness of his theory.