名词
中文翻译：Unknown
同义词：
['introduction', 'introduction to', 'prelude', 'foreword', 'preface to', "preface to...例句：1. The book's preface explains the author's intentions and background.（这本书的前言解释了作者的意图和背景。）"]
例句：
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1. The book's preface explains the author's intentions and background.
这本书的前言解释了作者的意图和背景。
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2. The speaker began with a brief preface before diving into the main topic.
演讲者开始时简短地介绍了主题。
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3.The preface is essential for understanding the book's structure and content.
序言对于理解书籍的结构内容至关重要。