Sales promotion is temporary in nature.

从本质上说，促销活动具有时间短暂的特点。

They lack the effective sales promotion.

他们缺乏有效的促销手段。

What do you think companies use sales promotion?

你认为公司进行促销活动是出于什么原因？

The advertising is one of many sales promotion artifice.

作广告是许多促销手段中的一种。

Here are our sales promotion products. Take your choice.

这些是我们工厂的推荐产品，你自己选吧。