occupant          
noun [ C ]  formal uk/ˈɒk.jə.pənt/ us/ˈɑː.kjə.pənt/
 居住者
a person who lives or works in a room or building
  The previous occupants were an Italian family. 先前的居住者是一家意大利人。 
  占有人;占用者
a person who is in a car, room, seat, place, or position
  One of the occupants of the car was slightly injured. 有一位乘车者受了轻伤。