recurring

动词 recur:

1. happen or occur again
   同义词：recur, repeat
2. return in thought or speech to something
   同义词：recur, go back
3. have recourse to
   同义词：fall back, resort, recur

形容词 recurring:

1. coming back
   同义词：revenant

1. A skin condition characterized by the development of recurring boils.
   疖病特征为经常出现疖子的一种皮肤状况
2. A device used to mark time by means of regularly recurring ticks or flashes at adjustable intervals.
   节拍器一种利用间隙可调的有规律地重复出现的拍打或闪光来标记时间的仪器