trail

vt.跟踪，追踪 n.足迹，痕迹；小路

traditionalist, traditionally, traduce, traducer, traffic, traffic circle, traffic indicator, traffic island, traffic jam, traffic warden, traffic-light (also `stoplight), trafficator, trafficker, tragedian, tragedienne, tragedy, tragic, tragically, tragicomedy, tragicomic, trail off, trail-blazer, trail-blazing, trailer, train, train compartment, train set, train-bearer, train-spotter, trainee, trainer, training, training-college, trainman, traipse, trait, traitor, traitorous, trajectory, tram,