万维网的控制正是师从于垂直整合、自顶向下的媒体世界，只存留一些对于自然的再思考和互联网的使用。

The control the Web took from the vertically integrated, top-down media world can, with a little rethinking of the nature and the use of the Internet, be taken back.

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语义网的方法主要可分为两类：经典的自底向上和新兴的自顶向下的方式。

We have written a lot about the different approaches to the Semantic Web - the classic bottom-up approach and the new top-down one.

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这次可能的变化紧随去年脸谱网引进“我顶”键，它允许用户通过点击“我顶”，展示他们在Facebook.com和其他网站上喜欢的内容或品牌。

The potential changes follow Facebook's introduction ofits "Like" button last year, which users can click to show they likea piece of content or a brand on Facebook.com and other sites.

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