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A worker checks the quality of beef by a device at the Greater Omaha Packing company which exports U.S. beef to China, in Omaha, the United States, Nov. 1, 2017. (Xinhua)
A worker checks the quality of beef by a device at the Greater Omaha Packing company which exports U.S. beef to China, in Omaha, the United States, Nov. 1, 2017. (Xinhua)