It works like this. Advertisers bid on keywords that they believe potential customers will be interested in.

它的运作流程如下：广告客户对他们所认为的潜在消费者所感兴趣的关键词进行投标。

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You may find certain keywords or ad groups actually perform better when you bid into a position that is lower on the page.

您可能会发现，某些关键词或广告组实际上在较低的搜索结果页面位置时，反而有更好的表现。

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The online business promotion service allows companies to bid on search keywords so that links to their Web sites will appear in search results.

这项网上广告推广服务允许企业按搜索关键词竞争排序，以便企业网站的链接可以出现在搜索结果里。

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These firms advise companies how to design their sites to rank higher in search results or to bid more wisely on ad keywords or craft ad copy that will get clicked on more often.

FORBES: Magazine Article

Its algorithms can suggest the best price to bid for keywords, based on where the ad will appear on the results page and how many other bidders are present, factoring in constantly changing auction prices.

FORBES: The Keyword Keeper

AdWords helped revolutionize online advertising, offering marketers the chance to bid to display their ads when people searched for certain keywords on the Google search engine.

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