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Simple compact calculator is attached to a supermarket trolley and is used by customer to enter data relating to purchases used to form total cost
Simple compact calculator is attached to a supermarket trolley and is used by customer to enter data relating to purchases used to form total cost
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机译：简单紧凑的计算器附在超市手推车上，客户用于输入与购买有关的数据，以形成总成本
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摘要
A simple calculator module is attached to a super market trolley. This is used to enter produce data and simplify check out.
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