Offshore drilling platforms extend the search for oil to the ocean's continental shelves—those gently sloping submarine regions at the edges of the continents.

海底钻井平台将寻找石油的区域延伸到了海洋大陆架——大陆边缘那些平缓倾斜的海底区域。

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Now a new breed of technologies is taking shape that will extend the reach of search engines into the Web's hidden corners.

现在，一种新的搜索技术正在形成，它将能使搜索引擎的范围延伸至网络的各个隐密角落。

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The problem is that given a search for a word, you want to be able to extend that search to particular, closely-related words.

要解决的问题是，给定一个要搜索的词，我们希望能够将搜索扩展到某些关系密切的词。

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NASA scientists hope to extend their search for water as deep as five meters beneath the surface of the moon.

VOA: special.2009.09.30

But if it then extends that to the idea that Google was trying to extend its search monopoly, that could have a greater effect.

FORBES: Will Google Dodge An FTC Antitrust Bullet?

Her eldest son, Robert, said that the family had obtained permission from land-owners, whose property bordered the beach, to extend the search onto their land.

BBC: Searches over for Disappeared

Though Hellmann has written a whole book about using online resources, Your Social Media Job Search, he emphasizes how important it is to extend most of your efforts beyond online search.

FORBES: Secrets of Making the Most of Job Search Websites