At most stores， one can always exchange products or even get a refund within a certain amount of time if he or she still has the sales slip and the product is in good condition.
At most stores， one can always exchange products or even get a refund within a certain amount of time if he or she still has the sales slip and the product is in good condition.
在多数商店，在一定的期限内，一个人总是可以去兑换商品或者甚至退到钱，如果他/她还有售货发票，并且物品还完好无损。