paper trail
— Navneord
– Engelsk
~ the written evidence of someone's activities; "this paper trail consisted mainly of electronically stored information"
power train
— Navneord
– Engelsk
~ wheelwork consisting of a connected set of rotating gears by which force is transmitted or motion or torque is changed; "the fool got his tie caught in the geartrain"
passenger train
— Navneord
– Engelsk
~ a train that carries passengers