It carries fine particles of sand, which bombard exposed rock surfaces, thereby wearing them into yet more sand.
它携带着细小的沙粒,这些沙粒会轰击裸露的岩石表面,从而把岩石磨成更多的沙子。
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This glimpse of Africa's Sahara Desert, located near where the borders of Mali, Niger, and Algeria converge, is truly a no man's land, a world of sand and rock without roads or settlements.