最強大腦學習法：不專心，學更好 (二手書交易資訊)

[{"sale_price":250,"disc":"63","prod_count":1,"sale_month":"202009","avg_price":250,"avg_disc":63},{"sale_price":279,"disc":"70","prod_count":1,"sale_month":"202010","avg_price":279,"avg_disc":70},{"sale_price":220,"disc":"55","prod_count":1,"sale_month":"202011","avg_price":220,"avg_disc":55},{"sale_price":254,"disc":"64","prod_count":1,"sale_month":"202012","avg_price":254,"avg_disc":64},{"sale_price":230,"disc":"58","prod_count":1,"sale_month":"202101","avg_price":230,"avg_disc":58}]