An introductory performance, event, or action preceding a more important one; a preliminary or preface.
An introductory performance, event, or action preceding a more important one; a preliminary or preface.
序幕先于较重要部分的介绍性表演，事件或行动；开端或序
An introductory performance, event, or action preceding a more important one; a preliminary or preface.
序幕先于较重要部分的介绍性表演，事件或行动；开端或序