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常春藤生活英语【26】Barcodes　条形码的起源

In 1948, the Drexel Institute of Technology in America got a call from a local storeowner asking for help. He wanted the school to invent a machine that would help keep track of inventory as well as speed up the checkout process. Drexel asked two of

发表于:2018-11-30 / 阅读(98) / 评论(0) 分类 常春藤生活英语

2014年ESL之旅行交通购物 10 Using a Self-Checkout Machine

Using a Self-Checkout Machine Claudia: Were done, right? Lets get in this cashier line. Raul: No need. This store has self-checkout machines. Claudia: I dont know. I think it would be easier going through a cashier line. Raul: Using the self-checkout

发表于:2018-12-03 / 阅读(74) / 评论(0) 分类 2014年ESL之旅行交通购物
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