irrevocable credit

例句：

1. 1. Thecontract was irrevocable, so we had to honor it.
   合同是不可撤销的，所以我们不得不遵守它。
2. 2. The decision was irrevocable, so we had no choice but to follow it.
   决定是不可撤销的，所以我们别无选择只能遵循它。
3. 3. The damage was irrevocable, and the company had to pay for it.
   损害是不可撤销的，公司不得不为此支付费用。