1 [U] introduction of sth (into sth) the action of bringing in sth new; using sth or taking sth to a place for the first time 引进；首度使用: the introduction of computers into the classroom 开始在教室里使用计算机

2 [C] [usu.pl] the act of telling two or more people each others' names for the first time 介绍（使双方相识）: I think I'll get my husband to make/do the introductions -- he's better at remembering names! 还是让我先生来介绍，他记名字的本事比我大！

3 [C] the first part of a book, a piece of written work or a talk which gives a general idea of what is going to follow （书的）引言，导论；（讲话的）开场白

4 [C] an introduction (to sth) a book for people who are beginning to study a subject 入门书: ‘An Introduction to English Grammar’ 《英语语法入门》

5 [sing] an introduction to sth first experience of sth 初次经历: My first job -- in a factory -- was not a pleasant introduction to work. 我的第一份工作是在一家工厂里，这初次的经历可不怎么令人愉快。