1. The author included a prefatorial note before the main text.
作者在正文前加入了一篇序言说明。

2. The book begins with a prefatorial chapter explaining its purpose.
这本书以一个解释其目的的序言章节开头。

3. The speaker gave a prefatorial explanation before presenting the research results.
演讲者在展示研究结果前进行了开篇说明。

A: Why does the book have a prefatorial section?
A：为什么这本书有前言部分？

B: The author uses it to introduce the background of the study.
B：作者用它来介绍研究背景。

1) 用于描述书籍、论文或演讲开头的介绍性内容

2) 指与序言或前言相关的部分

3) 常见于正式写作和学术语境中

1. 序言的；前言的；开场介绍性的。

e.g. The article contains a prefatorial statement from the editor.
这篇文章包含编辑写的一段序言性说明。

2. 用作正式文本开头部分的说明或引导。

e.g. The prefatorial remarks provided useful background information.
开篇说明提供了有用的背景信息。

adjective

1. Relating to or serving as a preface, introduction, or opening statement.

Synonym: introductory, preliminary, opening