perpetual

adjective [原级]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

I thought her perpetual complaints were going to prove too much for me. ^{我觉得她那永无休止的抱怨会让我吃不消的。A perpetual mist hung over the valley.}