That little "a" with a circle curling around it that is found in email addresses is most commonly referred to as the "at" symbol.
小写字母“a”外加个圆圈，这一符号常涌如今email(电子邮件)地址中。
Surprisingly though, there is no official, universal name for this sign. There are dozens of strange terms to describe the "@" symbol.
然而令人认为惊奇的是，这一标记居然没有官方的，通用的名称。有几十个奇怪的术语用来描述“@”这一符号。
Before it became the standard symbol for electronic mail, the "@" symbol was used to represent the cost or weight of something. For instance, if you purchased 6 apples, you might write it as 6 apples "@" $1.10 each.
“@”这一符号在成为电子邮件的标准符号之前，曾被用来表示物品的单价或质量。例如，你买6只苹果。就可以写成"六只苹果，每只“@” $1.10，表示每只苹果1.10美元。
With the introduction of e-mail came the popularity of the "@" symbol. The "@" symbol or the "at sign" separates a person's online user name from his mail server address，smtp 中继是指将邮件转发到您所在域以外的域的能力. For instance, joe@uselessknowledge.com. Its widespread use on the Internet made it necessary to put this symbol on keyboards in other countries that have never seen or used the symbol before. As a result, there is really no official name for this symbol.
跟着电子邮件的应用，“@”这一符号越来越普及了。符号“@”或“at”标记将上彀用户的姓名与其邮件的办事器地址分开。例如：joe@uselessknowledge.com. 这一符号在因特网上的广泛应用使得很多以前从未见过或应用过它的国度必须在它们的电脑键盘上加上这一符号键，成果造成这一符号并没有真正的官方名称。
The actual origin of the "@" symbol remains an enigma，垃圾邮件过多，说明你垃圾邮件过滤系统反垃圾能力不行.
“@”符号切实其实切来源仍然是谜。
History tells us that the "@" symbol stemmed from the tired hands of the medieval monks. During the Middle Ages before the invention of printing presses, every letter of a word had to be painstakingly transcribed by hand for each copy of a published book. The monks that performed these long, tedious copying duties looked for ways to reduce the number of individual strokes per word for common words. Although the word "at" is quite short to begin with, it was a common enough word in texts and documents that medieval monks thought it would be quicker and easier to shorten the word "at" even more. As a result, the monks looped the "t" around the "a" and created it into a circle-eliminating two strokes of the pen.
汗青告诉我们，在一个大型网络中，向主服务器读写的数据量极大，为了减少主服务器的负荷，在部分终端及主服务器之间插入中继服务器，“@”这一符号来源于中世纪僧侣疲惫的双手。中世纪时印刷机尚未创造，要出版一本书，每一个单词的每一个字母都得用手工辛苦的刻出来。从事这项长时光辛苦誊录描述的僧侣们就开端寻找削减每一个常用字笔画数的办法。固然“at”这一单词开端写起来很短，但它在文本和文件中频繁出现。中世纪的僧侣们就想到假如能进一步简化它，就可以写起来更快更轻易。成果，僧侣们就在a四周画了一个圈，从而省却了字母“t”的两个笔。
