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yardang n.由風力作用而形成的,常與風向平行的不規則的沙脊。

yardarm

The yardang landform of aqik valley in the east of lop - nor and its relationship with the evolution of the kumtagh desert 羅布泊東阿奇克谷地雅丹地貌與庫姆塔格沙漠形成的關系