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Drone used to pollinate pear flowers in N China's Hebei

Source: Xinhua| 2019-04-07 16:22:43|Editor: zh
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CHINA-HEBEI-CANGZHOU-AGRICULTURE (CN)

A man operates a drone to pollinate pear flowers at Hougaoyao Village of Botou City, north China's Hebei Province, April 7, 2019. (Xinhua/Mu Yu)

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