想象一下：只需用智能手机就能从贩卖机那儿买汽水，或者只需对报纸上的广告二维码扫一扫就能买东西。
Imagine getting a soft drink from a vending machine using only your smartphone. Or scanning a QR code to buy goods from a newspaper AD.
想象一下：只需用智能手机就能从贩卖机那儿买汽水，或者只需对报纸上的广告二维码扫一扫就能买东西。
Imagine getting a soft drink from a vending machine using only your smartphone. Or scanning a QR code to buy goods from a newspaper AD.
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