一共多少钱?
yígòng duōshao qián?
How much in total?
可以刷卡吗?
Can I pay by card?
This is a polite question using 可以 (kěyǐ, 'may/can'), the verb 刷卡 (shuākǎ, 'to swipe a card'), and the question particle 吗 (ma).
Use this when you want to pay with a credit or debit card. It's common in shops, restaurants, and hotels. Note that in China, mobile payment is more common than cards, so be prepared for the answer to be 'no' in smaller places.
“Can I pay by card?” in Chinese is 可以刷卡吗? (kěyǐ shuākǎ ma?).
可以刷卡吗? is pronounced kěyǐ shuākǎ ma?.
Tomyo
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