The World Factbook.

世界概况。

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The World Factbook is the reliable and extremely popular source of information on all the nations of the world.

世界概况是可靠的和非常受欢迎的信息来源，对所有于世界民族之林。

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The world Factbook is a must-have application for those who possess a curiosity or concern about the rapidly changing world in which we live.

世界概况是一个必须具备的申请者谁拥有好奇心或关注迅速变化的世界中，我们的生活。

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According to the CIA World Factbook, in 2009 the U.S. ranked 160th among the 215 world nations in real GDP growth.

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To construct the list, we pulled a broad range of economic statistics from the International Monetary Fund, supplementing with other sources including the CIA World Factbook, the U.S. State Department and various development organizations.

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The CIA World Factbook says it is the nation's most populous city.

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