1.He was determined to track down the cause of food spoilage.
他决心查出食品腐烂的原因。
2.The criminal was tracked down and knocked off by the police.
那个罪犯被警察追到后, 被逮捕起来了。
3.All citizens should help the police in tracking the criminals down.
所有市民都应该帮助警察追捕罪犯。
4.Equipped with a Corellian JumpMaster 5000 christened the Punishing One, Dengar was a one-man judge, jury and executioner tracking down criminals of the New Order.