traceable

a. 可追踪的,起源于

town hall, town house, town planning, town-folk, townee, townsfolk, `townspeople, township, townsman, toxaemia (also toxemia), toxic, toxicity, toxicologist, toxicology, toxin, toy, toy animal, Toyota, toyshop, trace, trace element, tracer, tracery, trachea, tracheotomy, trachoma, tracing, tracing-paper, track, track and field, track down, track events, track out, track record, track suit, tracked, tracking station, tract, tractability, tractable, traction,