The letter of credit is the bank instrument that assures the person selling merchandise of payment if he makes the agreed-upon shipment. 信用证是银行对销售商品者已装运订购的出口货物承担付款保证的信用工具。
Cargoes pile up on the dockside and ships wait empty because exporters cannot get letters of credit to secure payment on delivery. 由于出口商得不到银行开据的信用证，在得不到货到付款保证的情况下，只能出口商品堆放在码头，无法装船离港。
A credit card is not a valid proof of identity. 银行发的支票保付卡不是有效的身份证明文件。
