促销活动：sales promotions

特价商品: special offer or special deal

买一赠一: Buy 1 Get1 Free

例句：

They are looking for other promotions to pull in customers.

他们正在寻找其他促销方法来吸引顾客。

Find out what exciting promotions we have prepared for you.

了解我们为您准备的激动人心的促销活动。