最近听人说起什么外企必知的几个英文缩写，像HR（human resource，人力资源）、OT（overtime，加班）等常见的缩写都一闪而过，倒是有一个cc让我停顿了好一会儿。你知道这个缩写代表什么吗？咱们今天就来说一说。

Carbon copying (abbreviated cc or c.c.) is the technique of using carbon paper to produce one or more copies simultaneously¹ during the creation of paper documents.

复写（carbon copying，简写为cc或c.c.）指在创建文本文件时用复写纸同时复制出多个副本的技术。

The use of carbon copies declined with the advent² of photocopying³ and electronic document creation and distribution (word processing). It is now common for a business letter to include, at the end, a list of names preceded by the abbreviation "cc:", indicating that the named persons are to receive a copy of the letter, even though carbon paper is no longer used to make the copies.

随着复印技术以及电子文件创建和处理技术的出现，复写技术的运用急剧减少。现在，很多商务信函的结尾处都会以“cc”开头列出一些人名，表示这封信函要抄送给这些人看，不过已经不用复写纸来创建副本了。