名词
中文翻译：参考
同义词：
['indicator', 'quotation例句：1. The book is a good reference for students preparing for the exam.（这本书是学生准备考试的好参考。）']
例句：
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1. The book is a good reference for students preparing for the exam.
这本书是学生准备考试的好参考。
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2.She quoted the passage from her textbook as proof of her understanding.
她引用课本中的那段话作为她理解的证据。
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3. He referred to his notes when explaining the concept in class.
他在课堂上解释这个概念时提到了他的笔记。