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UAV applied to combat smog in Harbin (4/4)

2014-10-23 10:00 Ecns.cn Web Editor:Yao Lan
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An unmanned aerial vehicle (UAV) is applied by environmental protection department to monitor and control illegal straw burning in Harbin, Heilongjiang province on October 22, 2014. [Photo: China News Service/ Wang Dongliang]
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