The discount retailer, struggling with a slowing economy and higher gasoline prices as well as merchandising mishaps, has seen its sales lag behind rivals like Target Corp.

• 缓慢发展的经济，飙升的油价，加上失败的销售使折扣零售商沃尔玛的销售额逐渐落后于对手，比如折扣零售商塔吉特。