作文: 1 阿狗 data说明middleaged consumer devoted 39 of retails sales of department stores,while the younger people只占25%。 而且the number of Middle-aged people will dramatically increase within the next decade。 因此 未来 department的sales会大幅上升。 To make use of this adcantage, department should replacing products that 吸引年轻人 with products that 吸引中年人的。