The constant air flow through the filter means that the filter does not last as long.

空气不断流过过滤器，意味着过滤器寿命有限。

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Finally, the "last mile" of mail delivery can be used to further filter offending e-mails.

最后，邮件交付的“最后一步(last mile)”可用于进一步过滤不希望的电子邮件。

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The last section discussed how to apply filter predicates at the database level to improve query performance and response times.

最后一节讨论如何在数据库级应用过滤谓词，以提高查询性能和缩短响应时间。

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If they're used properly, they will last 10 years and filter 250 gallons of water every day.

CNN: Former bartender turns wine into water

Last year Consumer Reports, a trade magazine, rated its filter coffee more highly than that offered by Starbucks.

ECONOMIST: Starbucks v McDonald's

Last week Chancellor Angela Merkel suggested that a system be set up to filter SWF acquisitions, (See: "Merkel Plays Protector") and earlier this month her finance minister, Peer Steinbrueck, said the government has to pursue an "active industrial policy" to protect German telecommunications, banking, postal, logistics and energy companies, from being taken over by SWFs.

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