单词：detrition
[医] 磨耗
n the wearing down of rock particles by friction due to water or wind or ice
n effort expended in moving one object over another with pressure
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The Weekend - Road Trip A: So, are we all ready to go? B: Yup, I think so. The cars packed; we have munchies and music, and the maps in the car. A: Did you get the camera? B: Got it! Did you fill up the tank? A: Yup, its all set. B: Youre sure were n
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Mr. President, Mr. Speaker, Members of the Congress of the United States: The gravity of the situation which confronts the world today necessitates my appearance before a joint session of the Congress. The foreign policy and the national security of
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Doug Levine | Washington 29 March 2010 January 23 marked the 100th birthday of the influential jazz guitarist and composer Django Reinhardt. Today, more than 50 years after his death, musicians are still paying tribute to the man who elevated the gui
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ENVIRONMENT REPORT - December 13, 2002: Bush Proposes to Ease Rules on Industrial Pollution By Cynthia Kirk This is the VOA Special English ENVIRONMENT REPORT. The Bush administration has announced ne
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By Pat Harris Washington 12 April 2006 Watch Fat Virus report Obesity is a growing problem around the world. In the United States, for example, almost one-third of the adult population is overweight.
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Scientists don't know what causes autism, but besides a genetic predisposition, they are now focusing on environmental exposure, or a combination of the two. A conference on autism is taking place in (the eastern state of) Pennsylvania. The aim is to
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By Peter Heinlein Harerge Region, Eastern Ethiopia 15 October 2009 A dry field of sorghum in Ethiopia Hunger is again stalking East Africa. The United Nations says 20 million people will need emergency food aid before the end of this year in six nat
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