v.[口语]花(钱)(for)( spring的过去式 ),使(木材等)裂开,使断裂,使弯曲
The competition and prize of a free car is a sprat to catch a mackerel.
举办竞赛并开出免费汽车的奖品不过是小钓饵.
Throw out a sprat to catch a mackerel.
抛出小鱼钓大鱼.