The Ares rocket is tentatively scheduled to be in service by 2015 but an influential review of Nasa's human spaceflight programme has cast doubt on its future.

战神火箭暂计划于2015年正式服役，然而一份有影响力的评估报告对NASA的人类太空计划前景表示了怀疑。

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But inside the Fed, an influential band of policy makers is fretting over the opposite: that the already-low rate of inflation is slowing further.

但在美联储内部，一批有影响力的决策者正在为相反的情形担心，即已经处在低位的通货膨胀率正在进一步降低。

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Perhaps Mr Friedman became not only a great economist but also an influential one because he had a love of argument.

也许是弗里德曼一生爱好辩论，所以使他成为了最伟大的经济学家，一个极富有影响力的人物之一。

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But Mrs.Johnson was also an influential environmental activist,tireless campaigner and successful businesswoman.

VOA: special.2010.09.26

Not only did he have official roles in those organizations, but was an influential in dozens of start-ups and social sites.

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The coup leader, Amadou Sanogo, seems to have been sidelined but heads an influential body that is supposed to reform the army.

ECONOMIST: Divided Mali

An obscure but increasingly influential piece of its empire, the Institute for Legal Reform (ILR), plays an important role here.

ECONOMIST: Corporate lobbying