The barcode, the QR code’s older sister, is limited to 20 characters of information and can only be read horizontally. In contrast, QR codes can hold about 7,000 characters of information and can be read at any angle. Also, unlike barcodes, they don’t require specialized devices to be read. The camera in your smartphone will do, as most modern phones include scanning functions. For a QR code to be scanned, it must contain three black squares in three of the code’s corners. These small squares help the camera determine the position of the code.

條碼(即行動條碼的前身)局限於二十個字元且只能水平讀取。相較之下,行動條碼可以容納大約七千個字元的資訊,並且可以從任何角度讀取。此外,與條碼不同的是,它們不需要專門的裝置來讀取。智慧型手機中的相機就可以做到,因為大多數現代手機都具有掃描功能。行動條碼的其中三個角落必須包含三個黑色方塊,它才能被掃描。這些小方塊可以幫助相機找出行動條碼的位置。

生活必備字詞:

advertisement n. 廣告(常縮寫為 ad)

be short for...  是……的縮寫

era n. 時代,年代

 

免費線上聽外師朗讀 https://ivyforfree.pse.is/3jks97

本文節錄自《常春藤生活英語》雜誌,完整內容請見四月號。


點擊閱讀下一則新聞 點擊閱讀下一則新聞

壹蘋派生活美語 藍色慢活區教你長壽的祕訣(一)