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2007年12月30日上午8时,华县水文站里瘦小精悍的杨文博和往常一样,按时坐在办公室的电脑前将自计水位记观测到的渭河华县断面水位数据按
At 08:00 on December 30, 2007, Yang Wenbo, a fellow at the Huaxian Hydrological Station, as usual, sat down in front of a computer at his office to record water level data from the Weihe section of Weihe County