perennial的复数形式怎么写？

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...

perennial的反义词有：annual, annual。adj.perennial的反义词（四季不断的;多年生的）：annual。perennial的反义词（其他释义）：annual。...

perennial的音标：perennial的英式发音音标为：[pə'reniəl]perennial的美式发音音标为：[pə'rɛniəl]...

perennial的近义词/同义词有：perpetual, continuous, steady, regular, constant, constant, changeless, ceaseless, annual, perpetual, continuous, steady, classic, regular。adj.perennial的近义词（继续的;永久的）：perpetual, continuous, steady, regu...

A perennial is a plant that lives indefinitely.多年生植物是指能存活很多年的植物。the perennial problem of water shortage缺水这个老问题I wonder at her perennial youthfulness.我对她青春常驻感到惊讶....

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.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...