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Sand dune
01
砂丘
a hill of sand built by wind or water flow
例
The topography of the desert terrain included sand dunes, rocky plateaus, and dry wadis.
The movement of sand dunes is influenced by the wind's direction and flow.
Over time, the sand dunes naturally flatten out due to wind and weather.
The troughs and ridges of sand dunes shift continuously in the desert as a result of wind erosion and deposition.
Barchan dunes are crescent-shaped sand dunes commonly found in sandy deserts, shaped by unidirectional wind.
