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 continual
Flowering 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)