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Use "sastrugi" in a sentence
"Driving vehicles over the sastrugi is pretty bad for tracks, towbars and tank runners."
"This area of the ice cap was covered with a layer of scalloped snow, what was called sastrugi, little curled waves of frozen snow formed by winds and erosion."
"The windblown snow, called sastrugi, is exceptionally hard and jostles and tosses the snow machines with every little bump."