英 [pəˈpetʃuəl] 美 [pərˈpetʃuəl]
adj. 长期的，永恒的；连续不断的，重复不停的；（职位、工作或战利品）终身的；（投资）永不还本的；（植物）四季开花的，四季结果的[1]
perpetual [ pə'petʃuəl, -tju- ]
1、continuing forever or indefinitely
"hell's perpetual fires"
同义词： ageless aeonian eonian eternal everlasting unending unceasing
2、uninterrupted in time and indefinitely long continuing
"the perpetual struggle to maintain standards in a democracy"
同义词： ceaseless constant incessant never-ending unceasing unremitting
3、occurring so frequently as to seem ceaseless or uninterrupted
"your perpetual (or continual) complaints"
同义词： incessant endless[1]
柯林斯英汉双解大词典
perpetual /pəˈpɛtjʊəl/
1.ADJ A perpetual feeling, state, or quality is one that never ends or changes. 永恒的