Introductory subject

入门───introduction;学科───subject

Ecuador provides a perfect introduction to South America; it's a continent in miniature.───厄瓜多尔是认识南美洲的绝佳切入点，它是南美大陆的缩影。

Generally, a book has an introduction.───一般说来, 书都有绪论.

Mary was shy at her introduction to the company.───在向公司介绍自己时,玛丽感到胆怯.

the introduction of new technology into the workplace───把新技术引进工厂

The book is a friendly, down-to-earth introduction to physics.───这是一本简明、实用的物理学入门书。

Painful typhoid injections are a thing of the past, thanks to the introduction of an oral vaccine.───自从发明了口服疫苗后，令人痛苦的伤寒疫苗注射就成为了过去。

Give an introduction, followed by the body of the material, then a brief summary.───首先写序言，接下来是内容的主体部分，然后作简短的总结。

To come back to what I said in the Introduction, in the nineteenth century Spain was fully a part of Europe.───回到我在导言中所说的，19世纪的西班牙是欧洲整体的一部分。

With the introduction of independent taxation,(sentence dictionary) a married woman's position is much clearer.

Mary was shy at her introduction to the company.

He began with a brief introduction.

The introduction explains how the chapters are organized.

A smart coat is a good letter of introduction.