宣传活动

Many schools use small classes as their trump card in marketing campaigns.

很多学校在做传活把小班授课当他们的王牌。

The competition and prize of a free car is a sprat to catch a mackerel. The publicity will mean good business for months to come.

举办竞赛并开出免费汽车的獎品不过是小钓饵。这一传活会使随后的几个月意兴隆。