perpetual (1)Lasting for eternity. 永远的永远持续的(2)Continuing or lasting for an indefinitely long time. 长期的,长久的继续或保持无限长的时间的(3)Instituted to be in effect or have tenure for an unlimited duration: 永久有效的在无限长时间内有效或有使用权的:a treaty of perpetual friendship.永久的友好条约(4)Continuing without interruption. 不间断的没有中断地连续的(5)Flowering throughout the growing season. 四季开花的整个生长季节都开花的perennial(1)Lasting or active through the year or through many years. 常绿的全年或多年都充满生机(2)Lasting an indefinitely long time; enduring: 持久的持续很长时间的;持久的:perennial happiness.永久的幸福(3)Appearing again and again; recurrent.不断出现的;重现的(4) Botany 【植物学】(5)Living three or more years. 多年生的生长三年或三年以上的可见perennial以下2点区别于perpetual1)(植物)多年生的2)持久,可能间断供参考:permanent, eternal, perpetual, everlasting, endless 区别http://zhidao.baidu.com/question/6795873.html?si=2