【彩神APP争8手机版ios单双_彩神APP争8手机版ios单双官网】Robots serve food in Shanghai's smart restaurant

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AGV (automated guided vehicle) robots line up to serve food to customers in a smart restaurant operated by Chinese e-commerce giant Alibaba at the National Exhibition and Convention Center in east China's Shanghai, Oct. 15, 2018. (Xinhua/Fang Zhe)

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