never ending or changing
永久的,永恒的
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deep caves in perpetual darkness .永远处在黑暗之中的深洞。
[attrib.]denoting or having a position, job, or trophy held for life rather than a limited period
(职位、工作或战利品)终身的
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a perpetual secretary of the society .协会的终身秘书。
(of an investment)having no fixed maturity date; irredeemable
(投资)永不还本的
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a perpetual bond .永久债券。
occurring repeatedly; so frequent as to seem endless and uninterrupted
连续不断的,重复不停的
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their perpetual money worries .他们为了钱没完没了的担心。
(of a plant)blooming or fruiting several times in one season
(植物)四季开花的;四季结果的
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he grows perpetual flowering carnations .他种植了四季都开花的康乃馨。
"Middle English: from Old French