roar

vi.吼叫；轰隆震响；呼喊(声)

road show, road tax, road test, road to, road-block, road-hog, road-house, road-mender, road-metal (also metal), road-works, roadblock, roadie, roadrunner, roadside, roadway, roadworthiness, roadworthy, roam, roamer, roan, roaring, roast, roaster, roasting, rob, rob sb. of sth., robber, robbery, robe, robin, Robinson Crusoe, robot, robot-arm, robotic, robotics, robust, robustly, robustness, rock, rock and roll (also ,rock 'n' `roll),