Ключевые слова: angle, asia, background, binocular, blue horizon, building, city, city landscape, coins, distance, downtown, eye, fashion, glass, hangzhou, history, holiday, landscape, lens, light, look, metal, nature, near china, observation, old, operation, optical, ornamental, panorama, periscope, sightseeing, signs, single, skyline, telescope, the line of sight, the sky and telescope, tourism, travel, urban, vision,