The immediate effect of printing was to increase the circulation of works that were already popular in a handwritten form, while less popular works went out of circulation.

印刷术的直接影响下，手写版就已经流行的书籍得到更多传播，不那么流行的作品却不再传播。

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An assessment of yellow fever virus circulation in human, non human primates and vectors was carried out in 2009 by a group of experts of the yellow fever Partnership.

2009年黄热病伙伴关系的一个专家组对黄热病病毒在人类、非人类灵长类动物及病媒中的传播进行了评估。

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Out on the broad verandas of the hotel, men and women, in cool white, sipped iced drinks and kept their circulation down.

旅馆外宽阔的阳台上男男女女穿着凉爽的白衬衫，啜着冰冻的饮料，舒缓着血液循环，可洗衣房里空气却热得要冒泡。

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The neighbourhoods in which they live end up permanently destabilised by the frequent circulation of adults in and out of prison.

ECONOMIST: A look at America's sentencing system

The money is pulled out of active circulation in the economy, which has the same effect as an official decrease in the money supply.

FORBES: Beltway Keynesians

Rejecting pressure from the U.S. Fed to cut interest rates, one ECB official said there is too much money in circulation, another sign that Europe is seeking its own way out of what it sees as a crisis born in the U.S.A. Sylvia Poggioli, NPR News, Brussels.

NPR: In Europe, Excesses Blamed For Money Meltdown