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UAV applied to combat smog in Harbin (1/4)

2014-10-23 10:00 Ecns.cn Web Editor:Yao Lan
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. Burning straw is the chief cause of the smog in north China. [Photo: China News Service/ Wang Dongliang]
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