Proxies receive requests from browsers and request content from servers on behalf of these clients.

代理接收来自浏览器的请求，并代表这些客户机从服务器请求内容。

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Deliver the appropriate functionality to service consumers based on the context, content and contract of the service request.

交付适当的功能，以基于服务请求的上下文、内容和契约为使用者提供服务。

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These HTTP request and reply headers occur for content cached in the browser.

对于浏览器中缓存的内容，会出现这些HTTP请求头和响应头。

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The search engines are motivated to deliver value so they need to be able to ensure high quality appropriate content for each and every search request.

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We understand that Twitter has an obligation to comply with legal requests that do not violate human rights, and we appreciate that you are taking steps to minimize the impact of censorship, by, for example, making censored content available outside the country where it is withheld, only censoring content in response to a government request, and providing notice when a tweet is censored.

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The rest are automatic, such as clicking a pre-configured link or having the browser execute request within a web page (for example, requests to call images and additional content from third party sites).

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