導入部
ど
う
にゅ
う
ぶ
Meanings
1
In music, the opening section of a piece or movement before the main theme.
The introduction of this symphony is very quiet.
2
General use for the opening section of a speech, article, presentation, etc.
In the introductory part of the paper, I explain the purpose of the research.
The lead of the speech grabs the audience's attention.