cash letter of credit

例句：

1. 1.We need to ensure that the cash letter of credit is issued in a timely manner.
   我们需要确保及时开具信用证。
2. 2. The bank will issue a cash letter of credit for the purchase of the goods.
   银行将为购买商品开具信用证。
3. 3. The seller has requested a cash letter of credit to facilitate the payment process.
   卖方要求开具信用证以便于支付流程。