The filter implements an evaluation method to identify the conditions indicating a request is to be blocked.

这个筛选器实现一种评估方法，从而识别表明应该阻止请求的条件。

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The default log level should be WARN which will write a message to the log file only if a request has been blocked.

默认的日志记录级别应该是WARN，它只在已经阻止了请求的情况下在日志文件中写消息。

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In other words, a client's thread of execution might not be blocked immediately after a request has been sent.

换句话说，客户端的执行线程可能会在请求发送后被立即阻塞。

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Democrats blocked the request.

WHITEHOUSE: Press Briefing

The judges' decision is thought to be the first time an English court has ever blocked an extradition request from a foreign government on the grounds that it would violate Article 6 of the European Convention on Human Rights, which safeguards the right to a fair trial.

BBC: Rwanda accused win UK court case

Twitter has blocked access to a neo-Nazi account at the request of the German government.

BBC: Twitter blocks neo-Nazi account to users in Germany