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A girl prepares her robot before taking part in a road challenge robotic competition for primary and secondary school on the 4th Nusantara Robotic Contest at South Tangerang, Indonesia, Oct. 29, 2017. (Xinhua/Agung Kuncahya B.)
A girl prepares her robot before taking part in a road challenge robotic competition for primary and secondary school on the 4th Nusantara Robotic Contest at South Tangerang, Indonesia, Oct. 29, 2017. (Xinhua/Agung Kuncahya B.)