跟踪
 trace 痕迹、跟踪、追溯 the cunning fox leave no traces for the hunters/trapper who trace the fox for five consecutive year finally captured it
 vestige 痕迹、遗迹
 stalk 跟踪the hunter carefully stalked the deer
 entrap 以往，以陷阱捕捉 the hounds entrapped the fox