Ключевые слова: agriculture, agronomy, air image, alps, apple, background, beautiful, blossom, bright, central switzerland, countryside, environment, europe, farm, farming, farmstead, field, forest, fresh, grass, green, hill, house, idyllic, landscape, lucerne, meadow, morning, nature, nobody, nottwil, outdoor, panorama, paradise, pear, scene, season, sky, spring, springtime, summer, sunny, sursee, swiss, switzerland, tourism, travel, tree, vacation, view,