supplementary credit meaning in English

补充信用状辅助成本
国内信用证
国内信用状

Share the benefits of credit cardmembership by giving your partner or responsible dependants an supplementary credit card . there is no supplementary credit card fee for the first year
您可为挚爱申请附属信用卡，同享美国运通的各项优越权益而且附属信用卡的首年年费均获豁免。
Spending on the supplementary credit card is itemized on your account for your payment and , if enrolled in membership rewards , you earn points for all supplementary credit card spending
附属信用卡会员所有签账均会同时详列在您的月结单内，而基本卡会员将须负责所有附属信用卡户口之全部账款。