The attribute value is an XPath expression that results in a Boolean after evaluation.

属性值是一个XPath表达式，表达式的计算结果必须是布尔值。

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Certification is awarded after evaluation of an applicant's educational transcripts, professional references and employment record.

对申请人的教育成绩单、专业鉴定材料和工作简历评估通过之后，就能授予证书。

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The internal and external environment of the library has changed a lot after relocation. The expenditure of library was cut down largely after evaluation.

搬迁之后图书馆内外部环境均有较大变化，图书馆的使用经费比较紧张。

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U.S.Undersecretary of Defense for Policy, Michele Flournoy, says President Obama's decision to send 30,000 more U.S.troops to Afghanistan in the next six months and then begin withdrawing them by July 2011 was made only after a lengthy district by district evaluation of the security situation in Afghanistan.

VOA: standard.2009.12.08

Becoming a chair umpire at top events takes years of officiating lower-tier matches, attending seminars, passing written tests and undergoing evaluation after evaluation--plus some luck.

FORBES: Magazine Article

The card can initially only be used at Asda but it is hoped the idea will extend to other shops after an evaluation.

BBC: Asda cards for poorest from Birmingham City Council

People who have cramping regularly should be seen by a health care provider, even though the cause is often never found after extensive evaluation.

CNN: What causes leg cramps?