introductions

1.介绍

2.推广,采用;引进

3.初步,入门(书),概论

4.序,导言,绪言;【乐】前奏,序奏

5.引导;传入

6.(育种)引种

1.the process of telling someone another person’s name when they meet for the first time

2.the process of bringing something into existence or use for the first time; the process of bringing something such as a plant or animal into a place or environment for the first time

3.something that provides an opportunity to learn or experience something for the first time

4.the part at the beginning of a book, report, etc. that gives a general idea of what it is about