慢速英语:机器人在美国超市中“奋战”
日期:2018-11-13
Words in This Story
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grocery – n. food and supplies bought at a store
delivery – n. the act of taking something to a person
ecommerce – n. activities that relate to the buying and selling of goods and services over the Internet
scan – v. to use a special machine to read or copy information into a computer
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