Do you pay with paper money, credit (信用的) card, or your phone when you go sopping?

你购物的时候是现金、信用卡还是手机支付？

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When you are at the airport and wanting to pay via a kiosk for checked or excess baggage a phone could make more sense than a credit card.

当你需要在机场柜台支付托运或者超重行李的费用，使用手机进行支付比信用卡更合理。

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A phone card is different, as it is only a one-use card. You must also pay in advance to use a phone card.

还有一种电话卡与上述的电话卡不同。因为它是一次性电话卡，因此，你得先付费才能使用。

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Cyclists will be able to pay using their mobile phone or cash card - receiving the first 30 minutes free.

BBC: Chris Boardman backs Liverpool bike hire scheme

Instead of opening wallets in shops and being confronted with a choice of whether to pay by cash or plastic card, they will wave a phone at the checkout.

ECONOMIST: Consumer banking

Under the deal, Starbucks will use Square's service that lets customers who download the "Pay with Square" smartphone app and who enter their credit card information into it to pay simply by using their phone or by stating their name to employees at the cash register.

WSJ: Starbucks to Use Square Inc.'s Mobile-Payments Technology