Duplicate Content - If multiple documents contain the same information, then only the most relevant document of that set is included in your search results.

重复的内容——如果多个文件，含有相同的资料，那么只有最相关的文件中的那个是包含在你的搜索结果里。

youdao

Despite public and private protests, Google gave the ultimatum that only a monopolist can give: in order to appear in Web search, you must allow us to use your content to compete against you.

我们在公开和私下场合都表示过抗议，但谷歌却对我们下达了只有垄断寡头才会给出的最后通牒：如果你们想要在网络搜索中出现，就必须允许我们使用你们的内容与你们展开竞争。

youdao

In my own experiments, Google video Search only turned up videos from Google video and YouTube, but the others seem to be aggregating content from across a variety of different services.

在我自己的实验中，Google视频仅仅从Google Video和Youtube中寻找视频，而其他的结果则似乎是多个服务商的聚合内容。

youdao

It's only available in English today and you can search for only a subset of content on Facebook.

ENGADGET: Facebook launching 'Graph Search' personalized social search engine, beta starts today (video)