What's more, grades are not only an educational device but are also part of a screening system to help assign kids to their next class or program.

更重要的是，分数不仅是一种教育手段，也是一个筛选系统的一部分，帮助我们把孩子分配到他们的下一个班级或课程。

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The fund selects across sectors, using an ethical screening approach that excludes defence and tobacco companies, and also follows a best-in-class strategy.

该基金实行跨行业选股，利用剔除防务和烟草企业的道德筛选方法，还采用行业最佳战略。

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Screening precision high, the efficiency is high, any powder, grain, the mucilage class may use.

筛分精度高、效率高，任何粉、粒、粘液类均可使用。

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"What on earth is going on?" Some analysts say discontent is bubbling up from the Pakistani middle class because of U.S.restrictions on visas and increased screening after recent bomb attempts.

VOA: standard.2010.05.06

ETFdb.com: Free resources on this Chicago-based site include screening tools to sort through ETFs by asset class, region, expenses and other specific requirements.

WSJ: Best Websites for Screening ETFs

With all of the information and cross-referencing available, there is clearly a certain class of traveler that can be eliminated as a threat and subjected to lesser screening without any significant risk.

FORBES: For Some Fliers TSA Security Lines Just Got Much Shorter