所有沙丘形成了一个更大的沙丘，几乎包围了整个湖泊。
All of the sand dunes, however, form part of a larger dune field nearly encircling the lake.
这张照片展示了某个极地陨坑，陨坑中还保存着一些夏季冰的痕迹，在风的作用下形成了一些美丽的沙丘。
This image shows part of a polar crater that still holds on to some summer ice, as well as beautiful sand dunes sculpted by the wind.
在旱季的时候，大约8月至11月间，强风将泥沙吹进内陆，形成高高的呈新月形状的沙丘。
During the dry season, roughly August to November, strong winds push sands inland, forming tall, crescent-shaped dunes.
阿曼一座新月形的沙丘脊由强信风吹成，在迎风的方向（图左侧）形成一面平缓的凸破，在背风面形成凹坡。
This crescent-shaped ridge of sand dune in Oman was formed by strong trade winds that form a smooth hill facing the wind (left) and concave slipface on the back.
强风使得水面上逐渐形成巨大的沙丘，其中一部分沙丘被淹没在水里。
Strong winds create huge sand dunes near the water, some of which are partly submerged.
土卫六照片呈现的地貌包括山脉、湖泊、沙丘以及流动液体形成的峡谷。
These photos show a landscape marked by mountains, lakes, dunes, and canyons carved by flowing liquids.
风雨冲刷着红峡谷的表面——在岛的西侧形成的古老沙丘。
Wind and rain lash the face of Red Canyon, an ancient dune complex on the island's eastern flank.
那里很少有松散的沙子，它们绝大多数已经形成矮小的沙丘。
There was little loose sand, and most of it had formed into low dunes.
弯曲的窗户从地面上隐隐地露出，把阳光带到南荷兰的这个地下停车场，它的顶上覆盖了绿色的山丘，形成了一个沙丘景观。
Curving Windows peep above the ground to bring light into this underground car park in South Holland, which is covered in grassy hillocks to replicate a dune landscape.
在这一沙漠场景中，一抹独株植物的绿色和空旷绵延的沙丘形成了强烈的对比。
The green of a lone plant lends stark contrast to the empty expanse of sand in this desert scene.
这个小沙丘是由风吹来的干沙子形成的。
受西风的影响，风透过植被吹过周围的沙子，形成新月形状的沙丘。
The wind scours the sand from around the scruffy vegetation, dragging it into crescent shaped parabolic dunes that point in the direction of the prevailing westerly wind.
这表明榆树对当地沙丘的形成和固定起主要作用。
That implied elm trees may play an important role on the accretion and fixation of sand dunes.
巴丹吉林沙漠湖泊中的钙华和根状结核的存在证实这些沙丘和湖泊形成的时间约3万年，而且基本上没有发生大的改变。
The existence of lacustrine tufa and root-shaped nodule in Badain Jaran Desert proves that the sand dunes and lakes were formed 30 ka ago, and have remained basically unchanged.
尽管火星上的液体凝结并很快地蒸发到稀薄的大气中，但是如今的风使得火星表面形成巨大的流动沙丘，看起来就像落下的水滴一样。
Although liquids freeze and evaporate quickly into the thin atmosphere of Mars, persistent winds may make large sand dunes appear to flow and even drip like a liquid.
沙丘走向有横向(NE -SW)和纵向(NW -SE)以及多风向形成的不规则形。
Shifting of dune had horizontal direction (ne SW) and longitudinal direction (NW SE) and irregular formation formed with varied wind direction.
这些足以说明，在自然状况下，河流演变在沙丘群和沙地形成演化中起着非常重要的促进作用。
Therefore, river evolution has very vital initiative and promoting effects on the formation and development of sand-dune groups and sandy land in natural conditions.
七里海有中国第一大潟湖之称，多数学者认为七里海外的海岸沙丘群是在滨外沙坝的基础上发育形成的。
Qilihai was called the largest lagood in China, and many scholars suggested that the coastal dunes outside the Qilihai lagoon developed from the offshore sand bars.
豫北平原的沙质草地分布于黄河多次泛滥改道冲积形成的沙丘、沙地。
Sandy rangelands scatter on the vast alluvial plains of the Huanghe River (Yellow River) in north Henan province (Yubei plain).
于是他们就谈起沙丘是怎样形成的。事情似乎是非常容易理解。
And they spoke of the way in which the sand-dunes had come inland , and it seemed very easy to understand.
山的形成过程，跟堆沙丘的道理是一样的！
The course of forming a mountain is just like that of forming a sand hill.
山的形成过程，跟堆沙丘的道理是一样的！
The course of forming a mountain is just like that of forming a sand hill.
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