rudder

n.舵

rubber-stamp, rubberize, rubberise, rubbery, rubbing, rubbish, rubbishy, rubble, rubella, Rubicon, rubicund, rubric, ruby, ruby wedding, RUC, ruche, ruched, ruck, rucksack, ruckus, ructions, ruddily, ruddiness, ruddy, rude, rudely, rudeness, rudiment, rudimentary, rue, rueful, ruefully, ruefulness, ruff, ruffian, ruffle, rug, Rugby, Rugby League, Rugby Union, rugged,