名词
中文翻译：提前退款
同义词：
['early refund', 'advance payment']
例句：
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1. We need to ensure that all customers receive their advance refunding within a reasonable time frame.
我们需要确保所有客户在合理的时间内收到他们的提前退款。
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2. The company is offering an early refund for any unused services.
该公司为任何未使用的服务提供提前退款。
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3. The policy allows for early refunding of unused vacation days.
该政策允许提前退还未使用的假期天数。