The Semantic Web is an extension of the current Web in which information is given well-defined meaning, better enabling computers and people to work in cooperation.
语义Web(语义网)是现有Web的扩展，信息被赋予定义良好的含义，更便于计算机和人的协同工作。
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The specification for the threading extension specifies the attributes and meaning of the in-reply-to element clearly and indicates that multiple in-reply-to elements can appear within an entry.