rule

vt./vi.统治；裁决 n.规则；习惯；支配

rudimentary, rue, rueful, ruefully, ruefulness, ruff, ruffian, ruffle, rug, Rugby, Rugby League, Rugby Union, rugged, ruggedly, ruggedness, rugger, ruin, ruination, ruined, ruinous, ruler, ruling, rum, rumba, rumble, rumbling, rumbustious, ruminant, ruminate, rumination, ruminative, ruminatively, rummage, rummage sale, rummy, rumor, rumour, rumour (US rumor), rumoured (US rumored), rump,