obsession

n.缠住，被困扰；观念固执，死脑筋

obscure, obscurely, obscurity, obsequies, obsequious, obsequiously, obsequiousness, observable, observance, observant, observantly, observation, observation car, observation post, observatory, observe, observer, observing, obsess, obsessed, obsessional, obsessive, obsessively, obsolescence, obsolescent, obsolete, obssess, obstacle, obstacle race, obstetric, obstetrician, obstetrics, obstinacy, obstinate, obstinately, obstreperous, obstreperously, obstreperousness, obstruct, obstruction,