irrecoverable loss of sight

永久的失明

《牛津高阶英汉双解词典》

The depression, however, caused many irrecoverable accounts and Dr. Sim started to run up debts.

然而经济萧条造成许多呆帐,他也因此负债累累.

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All business are to be transacted against confirm and irrecoverable letter of credit.

所有交易都应采用保兑的不可撤销信用证支付.

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