名词短语
中文翻译：退款保证
同义词：
['refund guarantee', 'return guarantee']
例句：
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1.We offer a money back guarantee if you're not satisfied with our product.
如果您对我们的产品不满意，我们提供退款保证。
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2.The company offers a money back guarantee for all orders placed within 30 days.
该公司对所有在30天内下单的订单提供退款保证。
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3. Before making a purchase, it's important to check the money back guarantee details.
在购买前，重要的是要检查退款保证的细节。