Ключевые слова: ancient, arid, asia, biology, biotechnology, chemistry, chimney, clay, column, conical, conservation, discovery, dry, education, erosion, experiment, ground, laboratory, landscape, lens, limestone, loss, medical, medicine, microbiology, microscope, nan, northern, park, pillar, pole, rain, research, rock, runoff, sample, sandstone, saodin, scene, science, soil, stone, technology, terrain, tourism, trip, valley, view,