把新做法帶進體系
被領進門的不再是實物，而是制度、產品或改變：公司、國家、市場就是那個「裡面」，新的東西第一次被帶進去開始運作。
launch (a plan/product) · verb · B1
To start using a new plan, system, or product for the first time.
引進／推出
核心畫面
One way to picture introduce: something is outside, and you lead it in through the door for the first time. A plant carried to an island, a rule brought into a company, a stranger walked into a circle of friends — the shape is always the same. Someone does the leading, the thing was not here before, and after the moment it belongs inside.
可以想成 introduce 是「把外面的東西第一次領進門」：一株植物被帶到島上、一條新規定被帶進公司、一個陌生人被…更多收起
可以想成 introduce 是「把外面的東西第一次領進門」：一株植物被帶到島上、一條新規定被帶進公司、一個陌生人被帶進朋友圈——形狀都一樣。有人負責領，被領進來的東西原本不在裡面，而這一趟走完之後，它就成了裡面的一員。From the word’s history
Latin introducere 'to lead in, bring in', from intro- 'inward, to the inside' + ducere 'to lead'. The 'bring something in' use is the older one in English (early 15c.); the familiar 'make two people known to each other' sense only appears around 1650s — so the leading-in picture came first and the social use grew out of it.
來自拉丁文 introducere「領進來」，由 intro-（往裡面）加 ducere（領、帶）組成。英文裡「把某樣東西帶進來」是比較早的用法（15 世紀初），我們最熟的「把兩個人介紹認識」反而晚到 1650 年代才出現——所以是先有「領進門」這個畫面，社交上的介紹才從那裡長出來。
Online Etymology Dictionary (etymonline.com/word/introduce)
From the picture
把人或新事物帶到某人面前
這一組的「裡面」是人：你把某個人或某件事領到別人的注意力範圍內，讓原本互不相識的兩邊第一次接上線。
introduce people · verb · B1
To tell two people each other's names when they meet for the first time.
介紹(認識)
Also in this word
introduce a species · verb · B1
To bring a kind of plant, animal, or thing to a place for the first time.
引入(引進)
insert carefully · verb · B1
To put something carefully into another thing.
注入／放入
原始詞典資料4 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
introduceverb/ˌɪntɹəˈdʒuːs/
- 1
To cause (someone) to be acquainted (with someone else).
- Let me introduce you to my friends.
- His unruly hair was slicked down with water, and as Jessamy introduced him to Miss Brindle his face assumed a cherubic innocence which would immediately have aroused the suspicions of anyone who knew him.
- 2
To make (something or someone) known, such as by formal announcement or recommendation.
- The senator plans to introduce the bill in the next session.
- Let me introduce our guest speaker.
- 3
To add (something) to a system, a mixture, or a container.
- Various pollutants were introduced into the atmosphere.
- 4
To bring (something) into practice.
- Wheeled transport was introduced long ago.
- In conformity with the decision of the Ministry of Interior, the Kansu-Szechwan Standard Time (same as Chungking Time) has been introduced as the standard time for all the railways.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。