“缺陷的”用英语怎么说

某厂家由于疏忽，制造并销售了一款刹车系统存在缺陷的汽车。A manufacturer negligently made and marketed a car with defective brakes.零售商可以退回有缺陷的商品。Retailers can return defective merchandise.越来越多的证据表明该疾病是由一种有缺陷的基因引起的.Evidence is accumulating that a defe...