stalk·er
noun/ˈstɔːkə(r)/
/ˈstɔːkər/
- a person who follows and watches another person over a long period of time in a way that is annoying or frightening
跟踪者；盯梢者 - a person who follows an animal quietly and slowly, especially in order to kill or capture it
悄悄接近猎物的猎人