Consider how e-ticketing simplified air travel, how universal product codes made shopping easier or how 800-number-based conference calls made teleconferencing more feasible.

 
  • 想想看電子購票系統如何讓搭機旅行變得簡(jiǎn)單,通用產(chǎn)品碼如何讓購物變得輕松,以及800開(kāi)頭的會(huì )議電話(huà)如何讓視訊會(huì )議變得更加可行。
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