词汇	rat on sb
释义	rat on sb 密靠某人,背弃某人
随便看	positive equilibrium points positive error positive estuary Positive ethical dimention positive eugenic measure positive eugenics positive eugerics positive euphemism positive europium anomaly positive euthanasia positive evaluation positive even number positive even numbers positive evidence positive evolution positive example positive excess Positive Excess Cash Holdings positive exercise electrocardiogram positive expectations positive experience positive experiences Positive expiratory end pressure positive expiratory pressure positive expiratory pressure plateau