tramlines

n [pl] 1 rails for a tram 电车轨道. 2 (infml口) pair of parallel lines on a tennis court marking the additional area used when playing doubles （网球双打时）球场两侧的加线. =>illus at tennis 见 tennis 插图.

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, trammel, trammels, tramp, trample, trampoline, trance, tranquil, tranquility, tranquilize, tranquilizer, tranquillity, tranquillity (US also tranquility), tranquilly, trans, trans-, transact, transaction, transatlantic, transcend, transcendence,