Ключевые слова: 20, 30, american, american football, area, arena, artificial, astroturf, athletics, background, ball, color, copy space, court, day, design, empty, field, football, football field, forty, game, goal, grass, green, horizontal, line, number, outdoor, pattern, play, recreation, soccer, space, sport, stadium, summer, team, texture, textured, thirty, turf, twenty, vertical, view, white, yard, yard line, yardline,