perturbation

n. 烦乱，扰乱

perspicuousness, perspicuity, perspiration, perspire, persuade, persuasion, persuasive, persuasively, persuasiveness, pert, pertain, Perth, pertinacious, pertinaciously, pertinacity, pertinence, pertinent, pertinently, pertly, pertness, perturb, perturbed, perusal, peruse, pervade, pervasion, pervasive, pervasively, pervasiveness, perverse, perversely, perverseness, perversity, perversion, perversity, pervert, peseta, pesky, peso, pessary, pessimism, pessimist,