名詞 letter of credit:

1. a document issued by a bank that guarantees the payment of a customer's draft; substitutes the bank's credit for the customer's credit

1. I'd like to draw100 yuan against this letter of credit.
   我想從這份信用證上提款100元。
2. I am sorry to say the only term of payment we can accept is100% irrevocable documentary letter of credit.
   抱歉地說，我們能接受的付款條件只有100％不可撤銷跟單信用證。
3. For overseas deliveries we have to request that you obtain a letter of credit from a bank.
   關于對外交貨，我方要求貴方應從往來銀行獲取信用證。
4. Since you insist, I must amend the letter of credit.
   既然你堅持，我就只好修改信用證。