lingerer       
noun [ C ] uk/ˈlɪŋ.ɡər.ər/ us/ˈlɪŋ.ɡɚ.ɚ/
 逗留某处的人
someone who takes a long time to leave somewhere
  The WiFi is only available from noon-5pm, to discourage evening lingerers. WiFi只在中午至下午5点提供,以免有人晚上逗留不走。 
 Most people have left the beach by 7pm, but there may be a few lingerers. 大多数人在晚上7点前就离开了海滩,但可能也会有一些人迟迟不走。 
 See: linger
 - More examples
 - The number of late lingerers was higher than usual.
 - Lingerers have their ID cards checked.
 - Some emotional lingerers find it impossible to leave relationships that are not working.