名词短语
中文翻译：退款责任
同义词：
['refund liability', 'refund obligation', 'reimbursement responsibility']
例句：
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1. Thecompany agreed to refund the customer's purchase price in full.
公司同意全额退还客户的购买价格。
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2. The policyholder must pay the full amount of the insurance premium before the refund of duty is processed.
在办理退税手续之前，保险持有人必须支付全部保险费。
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3. The airline offered a refund of duty for the flight cancellation.
航空公司为航班取消提供了退款服务。