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（接上期）二十一、什么是Ｅｍａｉｌ（电子邮件）？Ｅｍａｉｌ（ＥｌｅｃｔｒｏｎｉｃＭａｉｌ）是Ｉｎｔｅｒｎｅｔ上的重要信息服务，它为世界各地的Ｉｎｔｅｒｎｅｔ用户提供了一种极为快速、简便和经济的通信以及交换信息的方法。与常规信函相比，Ｅｍａｉｌ非常迅速...
(Continued) twenty-one, what is Email (e-mail)? Email (ElectronicMail) is an important information service on the Internet that provides Internet users around the world with an extremely fast, easy and economical way to communicate and exchange information. Email is very fast compared to regular letters ...