顾客有权在一段时间内退货，如果期限已过，也可以换货。 段中be entitled to表示"有权利做某事"，refund表示"退款"。
When a customer is not satisfied with a product, he is entitled to return it to the store and get refunded during a certain period of time.
顾客有权在一段时间内退货，如果期限已过，也可以换货。 段中be entitled to表示"有权利做某事"，refund表示"退款"。
When a customer is not satisfied with a product, he is entitled to return it to the store and get refunded during a certain period of time.
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