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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。
          • Erect perennial of wet woodlands of North America having leaves and flower buds resembling those of soapwort.
            北美洲潮湿的林地中的多年生植物,叶子和花蕾类似肥皂草的叶和花。
          • Wild rice stem belongs to herb of marsh of gramineous vivacious perennial root.
            茭白属于禾本科多年生宿根沼泽草本植物。
          • Perennial herbs and shrubs and lianas; cosmopolitan especially in salt-water areas.
            多年生草本和灌木和藤蔓植物;广域特别在咸水区域。
          • European perennial plant naturalized in United States having triangular ovate leaves and lilac-pink flowers.
            欧洲多年生的植物,移入美国,有三角形的卵形的叶子和丁香粉色的花。
          • 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。
          • 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。
          • Perennial herb with yellow flowers; southern and south central United States.
            开黄花的多年生草本植物;美国南部和中南部。
          • 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。
          • Annual to perennial herbs of the Mediterranean region.
            地中海地区一个一年或多年生草本属。