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Additional reporting by Emma Calder
。51吃瓜对此有专业解读
It showed a man on a bike in a balaclava, in front of shop signs written in Arabic.
She points out that blockchain-based tracking of a food at each point in the supply chain might be feasible for a product like South American bananas, but isn't feasible for a lasagne containing 50 ingredients from all over the world.