An introductory remark, talk, or part of a book gives a small amount of general information about a particular subject, often before a more detailed explanation.
例句
...an introductory course in religion and theology.宗教与神学入门课程
ADJ
(新品)促销的,特惠的
An introductory offer or price on a new product is something such as a free gift or a low price that is meant to attract new customers.
例句
...just out on the shelves at an introductory price of £2.99.刚刚以2.99英镑的新品促销价上架
英汉词典释义
adj.
引导的, 介绍的;导言的
The chairman made a few introductory remarks.会议主席说了几句开场白。
英英词典释义
Adjective
1. serving to open or begin;
"began the slide show with some introductory remarks"
2. serving as a base or starting point;
"a basic course in Russian""basic training for raw recruits""a set of basic tools""an introductory art course"