词典释义：
[mass noun]the bringing of a product, measure, concept, etc. into use or operation for the first time
（首次对产品、措施、概念等）推行，采用，采取
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issues arising from the introduction of new technology .采用新技术所带来的问题。
[mass noun]the action of bringing a new plant, animal, or disease to a place
（对新物种或疾病）引进，引入，传入
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the introduction of muskrats into central Europe .麝鼠引进到中欧。
[count noun]a thing, such as a product, measure, plant, etc. newly brought in
引入物（如产品、措施、植物等）；引种
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newer introductions such as the cut-leaf Chinese vine .裂叶中国葡萄等的新引种。
(常作
正式介绍，引见
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he returned to his desk, leaving Michael to make the introductions 他回到自己桌旁，让迈克尔来作介绍
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[mass noun]
a letter of introduction .介绍信。
a thing preliminary to something else
引子，引导物
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your talk will need an introduction which states clearly what you are talking about and why .你演讲需要有开场白以清楚表明演讲内容和目的。
an explanatory section at the beginning of a book, report, etc.
（书、报告等起始时的）引言，序言。
a preliminary section in a piece of music, often thematically different from the main section
序曲。
a book or course of study intended to introduce a subject to a person
导论；初阶
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a good general introduction to the subject is A Social History of England .《英格兰社会史》是一部不错的学科入门书。
[in sing.]a person's first experience of a subject or thing
初次经历，初次接触
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my introduction to drama was through an amateur dramatic society .我对戏剧的初次接触是通过一个业余戏剧社开始的。
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an introduction of sth ...的介绍
真题例句：
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an introduction to sth 对...的介绍
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in one's introduction 在某人的介绍中
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introduction of sth ...的引入
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an introduction about sth 关于...的介绍
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self-introduction 自我介绍
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one's introduction to sth 某人的初次经历
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introduction paragraph 导论部分
真题例句：
"late Middle English： from Latin
