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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，这一符号常出现在email(电子邮件)地址中，通常是作为“at”(在)的标记。 Surprisingly though, there is no official, universal name for this sign. There are dozens of strange terms to describe the @ symbol。 然而令人感到惊奇的是，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绘@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. 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。 | 
