perennial是什么意思？

perennial

英[pəˈreniəl] 美[pəˈrɛniəl]

• adj. 终年的，长久的，多年生的，不断生长的，四季不断的；
• n. 多年生植物，长期存在的；

复数：perennials;

副词：perennially;

例句

• the perennial dilemma between getting on at work and fulfilling family commitments 事业成功与履行家庭义务之间长期存在的矛盾
• I wonder at her perennial youthfulness. 我对她青春常驻感到惊讶.
• the perennial problem of water shortage 缺水这个老问题
• Lythrum salicaria is a perennial herb , its root system is a fibrous like tap root system. 千屈菜lythrumsalicaria为多年生宿根植物,须根状直根系.
• A perennial is a plant that lives indefinitely. 多年生植物是指能存活很多年的植物。
• It is very difficult to control perennial weed horsetail ( Equsetum arvense L . ). 问荆 是一种多年生难防杂草.
• Helophyte A perennial marsh plant that has its overwintering buds under water. An example is bulrush ( Typha ). 沼生植物:多年生的沼泽植物,具有水下越冬芽. 例如芦苇 ( 香蒲 ).
• Helophyte A perennial marsh plant that has its overwintering buds under water. 沼生植物:多年生的沼泽植物,具有水下越冬芽.
• 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.
• Description: Perennial herbaceous vines, with milky juice , glabrous throughout. 形态特徵: 多年生草质藤本, 全体无毛, 有乳汁.

同义词

• adj.
  perennial的同义词之：继续的;永久的
  perpetual, continuous, steady, regular, constant,
• perennial的同义词之：其他释义
  constant, changeless, ceaseless, annual, perpetual, continuous, steady, classic, regular,

反义词

• adj.
  perennial的反义词之：四季不断的;多年生的
  annual,
• perennial的反义词之：其他释义
  annual,

柯林斯高阶英汉双解学习词典释义

• ADJ-GRADED
  （尤指问题或困难）永恒的，持续的，亘古不变的
  You use perennial to describe situations or states that keep occurring or which seem to exist all the time; used especially to describe problems or difficulties.
  例句
  ...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 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
  A perennial plant lives for several years and has flowers each year.
  例句
  ...a perennial herb with greenish-yellow flowers. 开绿黄色花的多年生香草

英汉词典释义

• adj.
  经常出现的;长期的;持久的; 长久的; 持续的; 反复出现的
  the perennial dilemma between getting on at work and fulfilling family commitments 事业成功与履行家庭义务之间长期存在的矛盾 I wonder at her perennial youthfulness. 我对她青春常驻感到惊讶。

英英词典释义

• Noun
  1. a plant lasting for three seasons or more
• Adjective
  1. lasting three seasons or more;
  "the common buttercup is a popular perennial plant"
  2. lasting an indefinitely long time; suggesting self-renewal;
  "perennial happiness"
  3. recurring again and again;
  "perennial efforts to stipulate the requirements"

行业词典

• 医学： 多年生的；