tranquil

a.安静的；宁静的

train-bearer, train-spotter, trainee, trainer, training, training-college, trainman, traipse, trait, traitor, traitorous, trajectory, tram, tramlines, trammel, trammels, tramp, trample, trampoline, trance, tranquility, tranquilize, tranquilizer, tranquillity, tranquillity (US also tranquility), tranquilly, trans, trans-, transact, transaction, transatlantic, transcend, transcendence, transcendent, transcendental, transcendental meditation, transcendentalism, transcendentalist, transcendentally, transcient,