Sperling says Alzheimer's is an incredibly complicated disease.

斯珀林说，老年痴呆症是一种令人难以置信的复杂疾病。

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Here Mr Sperling had a key fact which demonstrated why reduction cannot be achieved by spending alone.

斯珀林先生用了一个关键的事实来证明为什么赤字减少不能仅仅通过加大消费来解决。

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Two other things that Messrs Daley and Sperling have in common are long experience of the sort of work they are being called on to do and a reputation for excelling at it.

戴利和斯珀林的另外两个共同点是，在他们从事的领域都有很长的工作经验，并以擅长而出名。

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Economist Peter Sperling of Touro College says unemployment figures are likely to continue even higher, despite recent positive indicators from beleaguered sectors of the U.S.economy.

VOA: standard.2009.04.02

Portland, Ore. researcher Bertrand Sperling analyzed crime and culture-and-leisure data, as well as education levels.

FORBES: Moving On Up

Other data used in the rankings came courtesy of Portland, Ore. researcher Bertrand Sperling.

FORBES: The South Rises Again

Portland, Oregon researcher Bertrand Sperling analyzed crime and culture-and-leisure data, as well as education levels.

FORBES: Magazine Article