1. shopping 购物2. purchase 购买3. sales 销售4. discount 打折5. checkout 结账台6. shopping bag 购物袋7. cart 购物车8. receipt 收据9. promotion 推广10. inventory 存货11. refund 退款12. exchange 换货13. cashier 收银员14. aisle 走道15. display 展示16. price 标价17. clearance 清仓18. shipping 运输19. online shopping 网上购物20. payment 支付
