The Manager class also has filtering methods called filter and exclude.

Manager 类还有两个过滤方法：一个是 filter，另外一个是 exclude。

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Retrieving the results from the index without filtering has its drawbacks.

从索引检索结果并且不进行过滤也有其缺点。

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Using its audio and video "fingerprinting" technology, Vobile has been filtering content on 56.com as well as the less popular Chinese site Pomoho.com since mid-2008.

FORBES: Sinking Video Pirates

For the users, the site will remain largely the same, as isoHunt has been filtering keywords from a list provided by the Motion Picture Association of America since the initial injunction in 2010.

FORBES: Movie Studios Win Important Appeal Against File Sharing Giant isoHunt

So far the filtering system has yet to materialize.

FORBES: Magazine Article