售出商品质量不符保证退款。
你对商品存在严重疑问，那你发起退款申请就可以了。
There are serious questions about your product, then you can initiate a refund.
如果你对商品不满意，你可以申请退款。
You can get a refund if you are not satisfied with the goods bought online.
如果你对商品不满意，你可以申请退款。
You can get a refund if you are not satisfied with the goods bought online.
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