The letter of credit is the bank instrument that assures the person selling merchandise of payment if he makes the agreed-upon shipment. 信用證是銀行對銷售商品者已裝運訂購的出口貨物承擔付款保證的信用工具。
Cargoes pile up on the dockside and ships wait empty because exporters cannot get letters of credit to secure payment on delivery. 由於出口商得不到銀行開據的信用證，在得不到貨到付款保證的情況下，只能出口商品堆放在碼頭，無法裝船離港。
A credit card is not a valid proof of identity. 銀行發的支票保付卡不是有效的身份證明文件。
