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adj.多年生的；常年的；四季不断的；常在的；反复的
n.多年生植物
1、perennity───n.持久；永久；长久
2、decennial───adj.十年间的；n.十周年纪念
3、sexennial───adj.每六年的；持续六年的；每六年一次的；n.六周年纪念
4、perenniality───n.全年；四季不断
5、perennials───n.[植]多年生植物；耐寒多年宿根花卉的统称
6、perennially───adv.永久地
7、ceremonial───adj.仪式的；正式的，礼仪的；n.仪式，礼节
8、centennial───adj.一百年的；n.一百周年；一百周年纪念
9、decennials───adj.十年间的；n.十周年纪念
1、Through the first five years of the LeBron James Era, the Cavaliers were in a perennial search for stability in the backcourt.───詹姆斯时代的这五年来，骑士长期都在寻求着一个稳定的后场阵容。
2、We learned that the Botai were able to build large perennial villages, sometimes with hundreds of homes.───我们了解到博泰人能够建造大型的常年村庄，有时候村里有上百户人家。
3、The implied promise evidently was that of life raised to its highest development of perennial bliss and glory.───所暗示的应许显然是高举到永恒的福分和荣耀，其最高发展的那种生活。
4、In the early days of browsers, a perennial and annoying problem was only being able to have one window open at a time.───在浏览器诞生之初，一个烦人的问题就是一次只能打开一个网页。
5、The perennial vegetation adjusts to the aridity by means of various avoidance mechanisms.───多年生植物会采用各种躲避机制以适应干旱。
6、perennial growers?───多年生植物种植者呢？
7、A perennial question asked by all Agile methods is "How much estimation is too much? "───所有敏捷方法都会问的一个问题是：“多少评估足够了？”
8、Nothing I touch seems to have any permanency, and even literature, the greatest love of my life, is beginning to lose its perennial joy.───没有什么我接触的是永恒的，即使是文学，我生命中的最爱，也开始失去它持久的快乐。
9、The root of a perennial called astragalus has long been used in Chinese medicine to boost the body's defenses, often with other herbs.───黄耆属多年生草本植物，长期以来在中药中一般都同其它草药一起用来提高人体的抵抗力。
1、I wonder at her perennial youthfulness.