The colour of the applied concrete is directly derived from the dune sand.

混凝土所采用的颜色直接源于沙丘。

youdao

The hinterland of Junggar basin is mostly covered with desert. It brings about difficulty for seismic prospecting due to its fluctuation, inhomogeneous distribution of surface dune sand.

准噶尔盆地腹部大都为沙漠所覆盖，地表起伏的沙漠以及近地表沙丘沙厚度的横向不均匀分布，给地震勘探带来了诸多困难。

youdao

Quartz grain surface textures in coastal dune sand which is mainly derived from beach sand have features characteristic of both typical aeolian environment and inheritable and reformable beach sand.

本文通过对广东和海南海岸沙丘砂石英颗粒的扫描电镜分析，认为其表面结构特征，既具有典型的风成环境特征。

youdao

They form when plants hold sand in the outer parts of the dune but the center of the dune continues to move.

VOA: special.2010.01.04

It is one of the largest sand dune fields in the United States.

VOA: special.2010.01.04

They are moved by dreams of adult happiness, but the form of those dreams is as serendipitous as ripples in a dune of sand.

NEWYORKER: Semi-Charmed Life

Coastal ponds are usually separated from the sea by a sand dune a few metres high.

ECONOMIST: Eye on the storm | The

The fog has cleared as I move clumsily across a towering sand dune that rolls down into the foaming white breakers.

BBC: The ghostly shore of Namibia��s Skeleton Coast