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Solar car Nuna9 from the Netherlands races during the second day match of 2017 World Solar Challenge in Canberra, Australia on Oct. 9, 2017. (Xinhua/2017 Bridgestone World Solar Challenge)
Solar car Nuna9 from the Netherlands races during the second day match of 2017 World Solar Challenge in Canberra, Australia on Oct. 9, 2017. (Xinhua/2017 Bridgestone World Solar Challenge)