The complexity of a filter program depends on the format that has to be parsed.

过滤程序的复杂性取决于要解析的格式。

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's social networking site announced Friday that it's launching Take Down Stay Down, a program designed to filter videos uploaded by users for copyrighted materials.

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Set up an anti-spyware program, firewall, or filter that keeps spam and other junk out of your system.

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Add a spam filter, firewall, or, best of all, an anti-spyware program.

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