c. 1600, from Late Latin introductorius, from introduct-, past participle stem of introducere "to lead in, bring in" (see introduction). Also used in English from c. 1400 as a noun meaning "introductory treatise or textbook."
权威例句
1. The chairman made a few introductory remarks.
会议主席说了几句开场白.
2. The chairman opened the ball with a few introductory remarks upon the items on the agenda.
主席先开头,简略地介绍了议事日程上的讨论事项.
3. Introductory biology texts tend to be compilations of conclusions.
导论式的生物学教科书,多倾向于结论的汇编.
4. The first two chapters provide introductory and background material.
头两篇提供入门性的和背景性的材料.
5. The introductory style seemed a little superfluous.