stay·er /ˈsteɚ/
  滯留者,耐性極強的人,抑制物,支持者
  Stay·er n. One who upholds or supports that which props; one who, or that which, stays, stops, or restrains; also, colloquially, a horse, man, etc., that has endurance, as in a race.
  ◄ ►
  stayer
       n : a person or other animal having powers of endurance or
           perseverance; "the horse that won the race is a good
           stayer"