introduction

introduction
noun

[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
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
（对新品种植物，动物或疾病）引进，引入，传入
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
newer introductions such as the cut-leaf Chinese vine.
裂叶中国葡萄等的新引种。
(常作 introductions)a formal presentation of one person to another, in which each is told the other's name
正式介绍，引见
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。
[mass noun]a letter of introduction.
介绍信。
a thing preliminary to something else
开端，开头
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）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
a good general introduction to the subject is A Social History of England.
《英格兰社会史》是一部相当不错的该学科入门书。
■[in sing.]a person's first experience of a subject or thing
初次经历，初次接触
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。

语源

late Middle English: from Latin introductio(n-), from the verb introducere (see introduce)

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