AdWords offers advertisers sponsored search ads, those little text ads that appear near search results. Advertisers have to pay only if the ads get clicked.

AdWords基于关键词的原理向受众提供广告，也就是那些出现在在搜索结果旁边的文本广告，在这些广告被点击之后商家才需要为此付钱。

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What probably makes Dogpile little-used is the fact that it intermingles sponsored search ads with the organic search results with virtually no visual cue it is doing so.

事实Dogpile很少被使用，究其原因就是其搜索结果混入了经过人为处理过的赞助商的广告，这样做就使搜索结果没有多大的视觉提示作用。

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Early in 2000, Google sold "premium sponsored links" : simple text ads assigned to particular search terms.

2000年的上半年，Google就开始出售“高级赞助商链接”：给每一个搜索指定简单的文字广告。

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