WHEN scientists gathered at the White House nearly four years ago to announce that they had sequenced the human genome, it was hailed as the "most wondrous map ever produced by humankind".

四年前当科学家们聚集在白宫，宣称他们已经找到人类的基因序列的时候，人们欢呼这是人类制造的奇特的图谱。

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White boxes are interchangeable, and the main application may assign any machine in the cluster as the controller, and this one in turn assigns map or reduce tasks to other connected white boxes.

白盒子是可互相交换的，主应用程序可能把集群中的任何机器指派为控制者，而这个机器就把map和reduce任务分派给其它连接的白盒子。

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This should usually be black and white map with little color variations to avoid drastic transitions.

这经常用带有颜色变化的黑白贴图，避免转变过快。

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Researchers at 11 institutions are mapping the largest conduits among brain regions by combining four imaging techniques, including a new method called diffusion magnetic-resonance imaging that allows researchers for the first time to accurately map the white matter of nerve fibers.

WSJ: Probing the Brain's Mysteries

The imminent power shift represents a stark change in ideologies: Abbas has long been a conduit of the White House-backed road map to Middle East peace.

CNN: Hamas' past casts shadow over peace plans

After Roberts flubbed the order of words during the public ceremony in 2009, a do-over took place in the White House Map Room the next day to erase any question that Obama was officially the president.

CNN: STORY HIGHLIGHTS