Except search engine, all the services of Internet such as E-mail, BBS, and FTP are all based on public protocols.
除了搜索引擎，所有其他的互联网服务，诸如e - mail、BBS和FTP都给予公开的协议。
On expression channels, it is gradually extended to blog and podcast channels from the traditional channels represented by E-mail, News Thread, BBS.
在表达途径上，既有以电子邮件、新闻跟帖、BBS为代表的传统途径，也逐步向以博客和播客为代表的新途径延伸。
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