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Students participate 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.)
Students participate 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.)