单词：markov switching heterscedasticity
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补充： CBR continuous bit rate CCIS common-channel interoffice signaling CCITT CCITT is the International Consultative Committee for Telephone and Telegraph, a consultative committee to the Interna
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Banana Protein May Be Virus Killer 香蕉的蛋白质或是病毒杀手 From VOA Learning English, this is the Health Lifestyle report. 这里是VOA健康生活频道 Bananas are often called the perfect food. 香蕉一直都是完美食物 They are
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ARI SHAPIRO, HOST: We've been talking for months about Russian interference in the U.S. elections and ongoing Russian cyberattacks. Well, today the Trump administration hit back, imposing new sanctions that freeze the U.S.-based assets of 19 Russian
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By Peter Fedynsky Washington, D.C. 17 May 2006 watch report on Russia The collapse of the Soviet Union in 1991 raised hopes Russia would become more democratic and less authoritarian. In the 1990's th
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After two-day stay in Cuba, Chinese Foreign Minister Wang Yi has arrived in Venezuela, the second leg of his four-nation Latin American trip. Wang Yi tour of the region began Saturday. For the latest, lets bring in our reporter Martin Markovits in Ca
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Whos Turning Your Towns On? 谁来为城市点燃彩灯? As Christmas approaches, towns and cities around the UK are preparing for a peculiarly British celebration. The switching on of a towns Christmas lights has become an increasingly competitive e
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