sales promotion

详细解释:促销
【经】 促进销售活动, 扩大销路的宣传活动, 推销

英语解释：

名词 sales promotion:

promotion that supplements or coordinates advertising

例句：

But your product is still new to our market, and we need to do a lot of work and spend a lot of money on sales promotion.但我们市场对你们产品仍然不太了解，我们在推销过程中需要做很多工作，花很多钱。