Ключевые слова: activity, alert, angle, artificial grass, artificial turf, ball, competitive sport, corner marking, exercising, fake grass, field, football on field line, grass, green, green grass, indoor soccer, lawn, leisure games, meadow, outdoors, play, player view, playing field, pressures, recreational pursuit, single line, soccer, soccer ball, sport, sports and fitness, sports team, stadium, striped, summer, target, turf,