perfunctory ADJ. /肤浅的，不投入的;漠不关心的/superficial; not thorough; lacking interest, care, or enthusiasm. The auditor's perfunctory inspection of the books overlooked many errors. Giving the tabletop only a perfunctory swipe with her dust cloth, Betty promised herself she'd clean it more thoroughly tomorrow.
perimeter N. /周长/outer boundary. To find the perimeter of any quadrilateral, we add the lengths of the four sides. peripheral ADJ. /外围的/marginal; outer. We lived, not in central London, but in one of those peripheral suburbs that spring up on the outskirts of a great city.
periphery N. /(圆形的)边缘/edge, especially of a round surface. He sensed that there was something just beyond the
periphery of his vision.
perjury N. /伪誓;伪证/false testimony while under oath. Rather than lie under oath and perhaps be indicted for perjury, the witness chose to take the Fifth Amendment, refusing to answer any questions on the grounds that he might incriminate himself.
permeable ADJ. /可渗透的，可学习的/penetrable; porous; allowing liquids or gas to pass through. If your jogging clothes weren't made out of permeable fabric, you'd drown in your own perspiration (figuratively speaking).
permeate V. /传播;流传/pass through; spread. The odor of frying onions permeated the air.
pernicious ADJ. /及具毁灭性的/very destructive. Crack cocaine has had a pernicious effect on urban society: it has destroyed families, turned children into drug dealers, and increased the spread of violent crimes.
perpetrate V. /犯/commit an offense. Only an insane person could perpetrate such a horrible crime.
perpetual ADJ. /永久的/everlasting. Ponce de Leon hoped to find the legendary fountain of perpetual youth.
perpetuate V. /保护免于灭绝/make something last; preserve from extinction. Some critics attack The Adventures of Huckleberry Finn because they believe Twain's book perpetuates a false image of Blacks in this country.
perquisite N. /津贴，补贴;奖金/any gain above stipulated salary. The perquisites attached to this job make it even more attractive than the salary indicates.
persona N. /角色/public personality or facade. Offstage the comedian was a sullen, irritable grumbler, a far cry from his ever-cheerful adopted stage persona.
personable ADJ. /有吸引力的/attractive. The man I am seeking to fill this position must be personable since he will be representing us before the public.
perspicacious ADJ. /洞察一切的，渗透的;机敏的/having insight; penetrating; astute. The brilliant lawyer was known for his perspicacious deductions. perspicacity, N.
pert ADJ. /爱管闲事的，无理的/impertinent; forward. I think your pert and impudent remarks call for an apology.
pertinacious ADJ. /拒不屈服;反抗/stubborn; persistent. He is bound to succeed because his pertinacious nature will not permit him to quit.
pertinent ADJ. /说到点子上的;中肯的;有关的/To the point; relevant. Virginia Woolf's words on women's rights are as
pertinent today as they were when she wrote them nearly a century ago.
perturb V. /感到不安/disturb greatly. The thought that electricity might be leaking out of the empty light bulb sockets
perturbed my aunt so much that at night she crept about the house screwing fresh bulbs in the vacant spots. perturbation, N.
peruse V. /细读/read with care. After the conflagration that burned down her house, Joan closely perused her home insurance policy to discover exactly what benefits her coverage provided her. perusal, N.
pervasive ADJ. /深入人心的;普遍的/pervading; spread throughout every part. Despite airing them for several hours, Martha could not rid her clothes of the pervasive odor of mothballs that clung to them. pervade,V.
perverse ADJ. /不正当的，邪恶的，做作的 ;硬脖子的/stubbornly wrongheaded; wicked and perverted. When Jack was in a
perverse mood, he would do the opposite of whatever Jill asked him. When Hannibal Lecter was in a perverse mood, he ate the flesh of his victims. Jack acted out of perversity. Hannibal's act proved his perversion.
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