洛林小叮当
促销活动 sales[例句]许多商店提前一个月就开始了一月份的特价促销活动。Many stores have started their January sales a month early.
红枫叶马大姐
sales promotion例句：很多商家在节日期间都搞一些促销活动。Many businessmen organize some sales promotion during festivals.补充一下，英语交流中，简单为宜，因此说 on sale就完全可以了 ^_^
