cvv number
cvv数量
以上为机器翻译结果，长、整句建议使用 人工翻译 。
On most CARDS, the CVV is a three-digit number printed, rather than embossed, on the back of the card.
对大多数卡cvv是一个三位数，打印，而不是印在卡的背面。
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Providing the CVV number when making an online purchase or donation proves that you actually have the physical credit or debit card, helping to protect the consumer and reduce credit card fraud.
FORBES: Political Scandal Developing Surrounding Credit Card Donations?
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