The classification of coastal dunes is the most important basic problem in the research on the landscape of the wind drift sand in coastal region.

海岸沙丘分类一直是海岸风沙地貌研究的重要基础问题之一。

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The thatched cottage was submerged by drift sand.

这个茅草屋被流沙淹没了。

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In deep drift sand strata, Has adopted the freeze method to dig a pit, Has produced the freeze and thaw soil.

深厚流砂层下采用冻结法凿井，产生了冻融土。

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" Red residue clinging to the scoop walls is from a sample collected earlier from a drift of windblown dust and sand called "Rocknest.

FORBES: First Curiosity Drilling Sample in the Scoop

Two days earlier, it had scooped some sand from a drift, sieved it to a fineness of less than a hundred and fifty microns, and dropped a portion half the size of a baby aspirin into a funnel on its back.

NEWYORKER: The Martian Chroniclers