Leadership from WHO and the messages from World Health Day 2011 can play a pivotal role in emphasizing these important messages to the general public.

世卫组织的领导作用以及2011年世界卫生日的信息可起到关键性的作用，向一般公众强调这些重要信息。

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The U.S. is realising that it is a pivotal power - it is both Pacific and Atlantic. This is a distinct advantage, and an important role.

美国已经意识到自己的重要力量——同属太平洋和大西洋。有明显的优势，扮演着重要的角色。

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In these research areas, sample classification based on gene expression data is acting a very important role, it generally has two pivotal steps: gene selection and Classifier design.

在这个研究领域里，基于基因表达数据的样本分类扮演着很重要的角色，它一般具有两个关键步骤：基因选择和分类模型设计。

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From helping to protect Yosemite and millions of acres of wilderness to the more recent work of building powerful alliances with labor and impacted communities, Sierra Club volunteers and staff have played a pivotal role in many of the most important environmental victories over the past century.

FORBES: Powerful First Impressions: Michael Brune's Day One at The Sierra Club

An important exception is the Treasury's role in foreign policy, where Mr Summers has already played a pivotal role as deputy secretary and before that as undersecretary for international affairs.

ECONOMIST: Larry Summers��s little prize