Letter of introduction
[经] 介绍信
🧩 词语组成解析
letter
['lɛtɚ]
n. 信;证书，许可证;字母，文字;字面意义;
vt. 用字母标明;写字母于;加标题;
vi. 写印刷体字母;
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
introduction
[,ɪntrə'dʌkʃən]
n. 介绍;引言，导言;采用，引进;新采用的东西;
introduc=introduct引导+tion名词后缀，表状态→引进的行为→介绍，引进
🗣️ 情景例句
I had a really bad day.
今天真是糟透了。
I go out for lunch at about 12:30.
我在大约12:30去外面吃午餐。
We've been anxious about you. We were expecting you back much earlier.
我们都为你们着急呢。都盼着你们早点儿回来。