【美国信用卡扫盲】从入门到高端 | 信用卡的隐藏功能 | 说一说那些神卡

我的四张卡Discover: https://www.discover.com/credit-cards/student/it-card.html Chase freedom: https://creditcards.chase.com/credit-cards/chase-freedom?CELL=6TKV&SL5P=Y71UH0 Amex SPG:…