tracker
noun [ C ] uk/ˈtræk.ər/ us/ˈtræk.ɚ/
追踪者，追捕者
a person who is able to find animals or people by following the marks they leave on the ground as they move over it
An Aboriginal tracker led them to the place where the plane had crashed. 一个土著追踪者将他们带到了飞机坠毁的地方。