They collect blood samples for analysis at a national laboratory.

他们收集血样以在一个国家实验室做化验分析。

《柯林斯英汉双解大词典》

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But Gary Adams, the vice-president of economics and policy analysis for the National Cotton Council, reckons that the high prices were mostly due to fundamentals.

但是加里·亚当斯，美国国家棉花理事会经济与政策分析的副会长，他认为有关的高价格主要由于棉花是民生必需品。

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"It is crucial that national authorities do not rush to give information on source of infection which is not proven by bacteriological analysis, as this spreads unjustified fears in the population all over Europe, and creates problems for our food producers selling products in the EU and outside of the EU."

VOA: special.2011.06.10

Three subsequent tests of the mask by the National Bioforensic Analysis Center came back positive for ricin, the document states.

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An expert at the National Bioforensics Analysis Center in Fort Detrick, Md.

NPR: Tests Link Deadly Ricin To Obama Letter Suspect

Sterling Burnett, senior fellow for the National Center for Policy Analysis, says government incentives skew national energy policy and that they should end for both the renewable sector and oil and gas industries.

FORBES: Obama and Romney Drill for Energy Answers