cruiser  
noun [ C ] uk/ˈkruː.zər/ us/ˈkruː.zɚ/
  (SHIP)     
  巡洋舰
a large fast ship used in war
   (BOAT)     
  游艇
a boat with an engine and a cabin in which people sail for pleasure
   (CAR)      
 US informal警察巡逻车 
a police car
  Two cops were sitting outside in a cruiser. 两名警察坐在一辆巡逻车外面。