ISP的设备对途经其中的网页流量进行关键词扫描，以用于定位投放广告。

Equipment in the ISP's network scans passing web pages for keywords that are then used to target ads.

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但是在这个帖子发表时，不加引号搜索“Gmail签名定位”关键词会产生超过50万个结果。

But as of this Posting, a search for "Gmail signature location" without the quotation marks brings in well over a half-million results.

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从一个定位准确的关键词策略和营销计划开始。

Start with a well-defined keyword strategy and marketing plan.

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