perk的一般过去时为：perked...

experiment的现在进行时为：experimenting...

developer的音标：developer的英式发音音标为：[dɪ'veləpə(r)]developer的美式发音音标为：[dɪ'veləpər]...

胆汁性腹膜炎...

pernicious的近义词/同义词有：hurtful, malignant, injurious, mortal, destructive, fatal, deadly, harmful, damaging, detrimental, detrimental, mortal, hurtful, black, malignant, damaging, deadly, destructive, disadvantageous, accur...

The report rehearses these issues expertly.该报告熟练地一一列举了上述问题.Shopkeepers expertly rolled spices up in bay leaves.店主熟练地将调料卷进月桂树叶里。Expertly he zigzagged his way across the field, avoiding the deeper gullies.他熟练地左一拐右一拐地绕过深沟，穿...

n.总星系，超星系...

perfect的现在完成时为：perfected...

leper的音标：leper的英式发音音标为：['lepə(r)]leper的美式发音音标为：['lepər]...

tamper的第三人称单数（三单）为：tampers...

We still asperses our tears and laughter in mature.我们依然挥洒着我们的泪水,在笑声中成熟.The sunset, and earth, I asperses full of people coming from the paradise of happiness - amusement park!夕阳西下, 余辉洒满大地, 我和家人们依依不舍的离开了这使快乐的天堂 -- 游乐园!...

n.（用于游泳或潜水的）脚蹼，鸭脚板adj.[口语]无礼的，轻率的，油腔滑调的( flip的比较级 )，冒失的，鲁莽的...

He dropped a sweet wrapper.他扔掉一张糖纸.Let's pull away the wrapper first.我们先把包装纸拉掉.She peeled off the wrapper of the box.她扯掉了盒子外的包装纸....

prosper的第三人称单数（三单）为：prospers...

caliper的第三人称单数（三单）为：calipers...

perjure的现在完成时为：perjured...

operative的反义词有：inoperative。adj.operative的反义词（活动的;生效的）：inoperative。...

v.意识到，察觉，发觉，理解...

n.节制（尤指饮食），节欲，戒酒...

n.时期，（一段）时间，学时，句号adj.具有某个时代特征的，（关于）过去某一特定历史时期的，（家具、服饰、建筑等）某一时代的...

vi.滤，渗透，（思想等）渗透，渗入vt.（用渗滤壶）煮（咖啡），渗滤...

The two airlines will cooperate on ticketing and schedules.两家航空公司将在票务和航班安排上展开合作。The two groups agreed to cooperate with each other.这两个组同意相互协作。Workers'leaders have expressed their willingness to cooperate.工人领袖们表达了合作的...

He was normally a very even-tempered person...他通常是个非常心平气和的人。I'm afraid I was rather bad-tempered yesterday; I think I owe you an apology.恐怕我昨天的脾气不怎么好, 我认为应该向你道歉。The Otterhound is amiable, boisterous and even - tempe...

repercussion的复数形式为：repercussions...

n.不定期，非周期性...

peril的第三人称单数（三单）为：perils...

supervise的一般过去时为：supervised...

hyperthermalgesia的音标：hyperthermalgesia的英式发音音标为：[haɪpəθɜ:məl'dʒi:zɪə]hyperthermalgesia的美式发音音标为：[haɪpəθɜməl'dʒizɪr]...

n.（工资以外的）财务补贴( perquisite的名词复数 )，额外收入，（随职位而得到的）好处，利益...

They were all perpetually starving.他们都一直忍饥挨饿。She wore a perpetually martyred expression.她总是那么一副可怜兮兮的样子。We belong perpetually to each other for life or for death.我们永远相依为命,同生死,共患难....