#Drones are helping transform barren mountains into green landscapes in northwest China's Gansu Province. At a suburban park, plant-protection drones transport seedlings across steep slopes with precision, making #afforestation safer, faster and far more efficient than

#Drones are helping transform barren mountains into green landscapes in northwest China's Gansu Province. At a suburban park, plant-protection drones transport seedlings across steep slopes with precision, making #afforestation safer, faster and far more efficient than

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