你还可以要求退款，但是要等上三个星期。
Finally, you can apply for a refund, but that takes three weeks.
他们可以要求退款。
因此，我希望可以换一个相机，否则我要求退款。
Therefore, I wish to exchange it for another camera or declare a refund.
汇款后，不能要求退款，只可以退回多余的钱。
After payment, you can not request a refund, only to return the extra money.
汇款后，不能要求退款，只可以退回多余的钱。
After payment, you can not request a refund, only to return the extra money.
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