The Uniform Resource Locator (URL) displays the address of a document or a server in the Internet. The general structure of a URL varies according to type and is generally in the form Service://Hostname:Port/Path/Page#Mark although not all elements are always required. A URL can be an FTP address, a WWW (HTTP) address, a file address or an e-mail address.
统一资源定位器 (Uniform Resource Locator, URL) 显示一个文档或一个服务器在 Internet 内的地址。一个 URL 的基本结构根据类型的不同而不同，但通常要符合以下形式：服务://主机名:端口/路径/页面#标记，其中不必一定注明所有元素。一个 URL 可以是一个 FTP、WWW (HTTP)、文件或 E-Mail 地址。