perennial

英 [pəˈreniəl]

美 [pəˈreniəl]

adj.  长久的; 持续的; 反复出现的; 多年生的
n.  多年生植物

复数：perennials　

TOEFLIELTSGRE医学

Collins.2 / BNC.11757 / COCA.8869

牛津词典

adj.

• 长久的；持续的；反复出现的
  continuing for a very long time; happening again and again
  1. the perennial problem of water shortage
     缺水这个老问题
  2. that perennial favourite, hamburgers
     汉堡包，这种永远受喜爱的食品
• 多年生的
  living for two years or more

noun

• 多年生植物
  any plant that lives for more than two years

柯林斯词典

• ADJ-GRADED （尤指问题或困难）永恒的，持续的，亘古不变的
  You useperennialto describe situations or states that keep occurring or which seem to exist all the time; used especially to describe problems or difficulties.
  1. ...the perennial urban problems of drugs and homelessness...
     毒品和无家可归这两个一直困扰城市的问题
  2. There's a perennial shortage of teachers with science qualifications.
     有理科教学资格的老师一直都很短缺。
• ADJ （植物）多年生的
  Aperennialplant lives for several years and has flowers each year.
  1. ...a perennial herb with greenish-yellow flowers.
     开绿黄色花的多年生香草
  2. Perennialis also a noun.
     
  3. ...a low-growing perennial.
     多年生矮小植物

英英释义

noun

• (botany) a plant lasting for three seasons or more

adj

• recurring again and again
  1. perennial efforts to stipulate the requirements
  Synonym:recurrentrepeated
• lasting three seasons or more
  1. the common buttercup is a popular perennial plant
• lasting an indefinitely long time
  1. perennial happiness

双语例句

• Perennial or annual aquatic or marsh plants.
  常年或一年生水生或沼泽植物。
• Annual or perennial grasses including decorative and meadow species as well as notorious agricultural weeds.
  一个一年或多年生禾本属，包括装饰性和草坪用草品种和声名狼藉的农业杂草。
• Viscid branched perennial of the southwestern United States and northern Mexico having tuberous roots and deep red flowers.
  美国西南部和墨西哥北部的长有粘质树枝的多年生植物，具有块状根茎和深红色花朵。
• Old World tropical herbaceous perennial of the agave family; in some classifications considered a genus of Liliaceae.
  龙舌兰科一个旧大陆热带多年生草本属；有些分类认为它是百合科的一个属。
• Poisonous Eurasian perennial herb with broad rounded leaves and yellow flowers and fibrous rootstock.
  一种有毒的欧亚草本植物，具有宽的圆形叶、黄色的花和纤维状根状茎。
• Annual to perennial grasses of temperate northern hemisphere and South America: barley.
  北半球和南美洲温带地区一个一年至多年生禾本科植物的属；大麦。
• Stout perennial of eastern and central North America having palmate leaves and showy racemose blue flowers.
  北美洲东部和中部的一种健壮的多年生植物，有掌状叶和艳丽的蓝色总状花序。
• Perennial of northern hemisphere with slender stems and bell-shaped blue flowers.
  北半球终年植物，有纤细的茎干和铃状花。
• Cosmopolitan genus of annual and biennial and perennial herbs: cress.
  一个一年两年和多年生世界性草本植物属；水芹。
• Perennial of arctic Europe having large white flowers with inflated calyx.
  长有肿胀花萼和大型白色花朵的欧洲北极地区的多年生植物。