'SETUMEI' means explanation,account,illustration and direction. ex)explanation of Japanese history nihon no rekishi no setumei ex)the directions for this machine Kikai no setumei

"It'ｓ a good explanation, isn't it? Great!"

Arigatou gozaimasu! Mina san

説明してくれないか？- Could I have an explanation? 簡潔な説明をしてほしい。- I need a concise explanation. @Blacksakura : ii setumei deSU ne. Subarashii ! - It is a good explanation. Great!