perturbation
perturbational perturbative perturbeb pertused pertussis peruke perusable perusal peruse peruser peruvian pervade pervader pervasion pervasive pervasively pervasiveness perve perverse Perverse migration perversely perverseness perversion perversity perversive pervert perverted perverter pervertible |
perturbation /,pə:tə:'beiʃn/
danh từ
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