名词短语
中文翻译：不可撤销的信用证
同义词：
['unrevisable letterof credit', 'irrevocable letter ofcredit']
例句：
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1. The bankissued a non-revoloingletter of credit to facilitate the transaction.
银行发行了一份不可撤销的信用证以促进交易。
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2. The buyer requested an irrevocable letter of credit for the purchase ofgoods.
买方要求一份不可撤销的信用证来购买货物。
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3. The seller must providea non-revoloing letterof credit as proof of payment.
卖方必须提供一份不可撤销的信用证作为付款证明。