And then, suddenly I need to MacBook Air sell my MacBook Air on Craigslist and I can take the person's credit card instead of having them bring $1200 to me or whatever I'm selling it for.

之后突然我需要,在克雷格斯利斯特网站上卖我的,而且我可以让那个人拿信用卡过来,而不是,带着1200美元或是我需要的别的东西给我。

斯坦福公开课 - Twitter之父Jack.Dorsey演讲：好奇和灵感的力量课程节选

The credit unions are even smaller, $748 billion -so it's less than $1 trillion in credit unions.

信用合作社就更小了,7480亿美元,还不到1万亿美元

耶鲁公开课 - 金融市场课程节选

So now amount to pay $4, credit card/debit card.

现在总计要付4美元，信用卡/借记卡。

哈佛公开课 - 计算机科学课程节选