The lines of wind-sculpted sand are characteristic of immense sand deserts, or sand seas, and the Rub' alKhali is the largest desert of this type in the world.
在一些广袤的沙漠或沙海里常常有这种被风雕刻的痕迹,而鲁卜哈利沙漠是这类沙漠中面积最大的。
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Total left Rubal-Khali early last year, after its program there ran far over its budget and its teams drilled three wells that came up dry.