追蹤者,跟蹤器,拉纖者
Tracker \Track"er\, n. 1. One who, or that which, tracks or pursues, as a man or dog that follows game. And of the trackers of the deer Scarce half the lessening pack was near. --Sir W. Scott. 2. (Mus.) In the organ, a light strip of wood connecting (in path) a key and a pallet, to communicate motion by pulling.
tracker n : someone who tracks down game