per.pet.u.al
adj.(形容词)Lasting for eternity.永远的:永远持续的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:例句:a treaty of perpetual friendship.永久的友好条约
Continuing without interruption.See Synonyms at continual 不间断的:没有中断地连续的参见 continualFlowering throughout the growing season.四季开花的:整个生长季节都开花的
来源:Middle English perpetuel 中古英语 perpetuel from Old French 源自 古法语 from Latin perpetu3lis 源自 拉丁语 perpetu3lis from perpetuus [continuous] 源自 perpetuus [连续的] per- [per-] per- [前缀,表示.极,完全,彻底.等意] petere [to go toward] * see pet- petere [向前走] *参见 pet-
【引伸】
perpet.ually
adv.(副词)