We'd chase down the ice cream truck on bikes.

我们骑自行车追冰淇淋车。

We are trying to chase down all possible clues.

我们正在设法寻找一切可能的线索。

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。

To get a good job, chase down every lead you can come up with.

为了找到好工作，任何机会都不要错过。

The chase down at Chertsey the previous night had not lasted long.

前一天夜里切特赛的追捕并没有持续多长时间。