wild-goose chase

1. 徒劳

It turned out to be a wild-goose chase.

结果证明这只不过是一场徒劳。

chase about

1. 到处跑

Stop chasing about and sit down.

别到处乱跑, 坐下来。

chase down

1. 找出

They are now trying to chase down all possible clues.

他们现在正在设法寻找一切可能的线索。

chase up

1. 为某一目的而寻找

Chase up the contractor and get a delivery date.

找到那个承包商, 要他定一个交货的日期。

give chase to

1. 追踪

The police immediately gave chase to the robbers.

警察立刻出动追捕盗贼。