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.
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Трамп высказался о непростом решении по Ирану09:14
Harriet BradshawScience reporter，更多细节参见heLLoword翻译官方下载
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