mastery

n.权力，统治，控制；精通，掌握

massive, massively, massiveness, massless, mast, mast-head, mastectomy, mastemaster, master, master class, Master of Ceremonies, master sergeant, Master's degree (also Master's), master-key, master-stroke, masterful, masterfully, masterly, mastermind, masterpiece, mastic, masticate, mastication, mastiff, mastitis, mastodon, mastoid, mastoiditis, masturbate, masturbation, masturbatory, mat, matador, match, match point, matchbox, matched, matchless, matchmaker, matchmaking,