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

• 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 or annual aquatic or marsh plants.
  常年或一年生水生或沼泽植物。
• Tall handsome perennial herb of southeastern United States having maplelike leaves and white flowers.
  美国东南的高的美丽的多年生草本植物，有象枫木的叶子和白色的花。
• Short hairy perennial with early spring blue-violet or lilac flowers; North America and Siberia.
  短的、有毛的多年生植物，早春开紫罗兰色或淡紫色的花；产自美国北部和西伯利亚。
• Mosses with perennial erect gametophores and stems with rows of leaves and drooping capsules.
  配子托四季直立的苔藓，茎上有成排的叶子和下垂的蒴果。
• A perennial is a plant that lives indefinitely
  多年生植物是指能存活很多年的植物。
• Slightly hairy perennial having deep green leathery leaves and flowers that are ultimately purplish-green.
  带细微毛的多年生草本植物，具有深绿色的、似皮革的叶子和最后成为紫绿色的花。
• 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。
• Genus of tall erect or branched American annual or perennial herbs with showy flowers: sunflowers.
  美洲的一个一年生或多年生草本属，高大而直立或多分枝，花艳丽；向日葵。
• Arborescent perennial shrub having palmately lobed furry leaves and showy red-purple flowers; southwestern United States.
  树木状的多年生的灌木，有叶状的有舌苔的叶子和艳丽的紫红色的花；分布在美国的西南部。