自然地理學, 极端地形, 陡坡(坡急剧), 地质学, 埃塞俄比亚, 崖(沿海岩), 莫斯(总厂), 动力自然, 流动的水, 瀑布, 自然美, Terra Mater, 性质, 没有人, 阳光, 天,

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