退款在英语中通常翻译为 "Refund"。如果您需要申请退款,您可以礼貌而直接地表达您的要求,并提供退款的具体原因和金额。例如:
```
Dear [商家名称],
I am writing to request a refund for the purchase of [商品名称] made on [购买日期]。我购买的商品存在[具体问题,如质量问题、尺寸不符等]。
Please let me know the process for the refund and the expected time frame. I look forward to your prompt attention to this matter.
Thank you for your assistance.
Sincerely,
[您的姓名]
```
请确保在申请退款时保持礼貌和耐心,并详细说明退款的理由。