The type shifting of libraries and the role changing of librarians in 21st century advance higher requirements for the quality of librarians.

21世纪图书馆的转型和图书馆员角色的转换对图书馆员素质提出了更高的要求。

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Role assignment and doc role changing questions of multi-in- ment that optimum synthetic index is proposed and it is verified in real system.

详细说明了基于机器人足球比赛的多智能体协作角色分配问题，提出了一种优化综合指标进行角色分配的方法．并在实际系统中得到验证。

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Subjective conditions and objective conditions which affect the role changing of the department librarians into subject librarians are analysed.

并分析了系资料员向学科馆员角色转换的客观条件和主观条件。

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That role is changing,according to White House spokesman Bill Burton.

VOA: standard.2009.08.24

Now, figure in the fact that smoking is playing a role, physical activity is playing a role, still just changing fruit and vegetable consumption potentially could reduce heart disease worldwide by this much: stroke by 19% and some cancers by as much as 20%.

实际上吸烟和运动都对此有影响,即使将这些因素都考虑进去,仅仅改变水果和蔬菜的摄入量仍然能,在全球范围内减少这么多的心脏病得病率,中风减少19%而某些癌症减少达20%

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Protester Daniel Abel, 25, who sleeps at West Park Church, said Zuccotti Park's role was changing.

WSJ: Occupy Wall Street Protesters' New Home: Churches

It can have a big role in changing what the world looks like to us.

CNN: September 27, 2012 -- Updated 1709 GMT (0109 HKT)

This opportunity is currently overlooked in our culture, but colleges and universities can play a big role in changing that.

FORBES: 3 Ways Colleges Can Build a Bridge for Future Leaders