perpetual
/pəˈpetjʊəl/adjective
1
- never ending or changing永久的, 永恒的：
deep caves in perpetual darkness.
永远处在黑暗之中的深洞。
1.1
- 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：
a perpetual secretary of the society.
协会的终身秘书。
1.2
- (of an investment) having no fixed maturity date; irredeemable（投资）永不还本的：
a perpetual bond.
永久债券。
2
- occurring repeatedly; so frequent as to seem endless and uninterrupted连续不断的, 重复不停的：
their perpetual money worries.
他们为了钱没完没了的担心。
2.1
- (of a plant) blooming or fruiting several times in one season（植物）四季开花的; 四季结果的：
he grows perpetual flowering carnations.
他种植了四季都开花的康乃馨。
派生词
perpetually
adverb词源
Middle English: from Old French perpetuel, from Latin perpetualis, from perpetuus 'continuing throughout', from perpes, perpet- 'continuous'.