可以这样设计对话：
Customer:How much is this?
Seller: 100RMB
Customer：Can you give me a discount?
Seller：Sorry, no discount, already the best price I can offer.
Because its color is so fresh, and much bigger than others in size. 100RMB is quite reasonable.
双肩背包的材质哪个好？
日期:2023-09-05
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2023-12-22 06:26
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