Level 6 · word 15,680 of 20,000

tracker

/ˈtrækər/ American
  • n. 追踪者, 跟踪器, 跟踪雷达
Definition
  • n. a person, device, or radar system that follows and finds something
Example
He uses a fitness tracker to count his daily steps.
他用健身追踪器来记录每天的步数。