Large dunes make access to the beach difficult in places.
在有些地方大沙丘使得靠近海滩很难。
We walked to the furthermost point and then sat on the sand dunes.
我们走到了最远点，然后坐在沙丘上。
The sea may rise or the land may fall; either way the sand dunes will be gone in a short time.
海平面可能会升高，或者陆地可能会下降；不论发生哪种情况，沙丘都将很快消失。
Second, as you know, sand dunes contain other types of particles, besides sand, including clay and silt.
第二，正如你所知，除了沙粒，沙丘还含有其他类型的颗粒，包括粘土和淤泥。
Now, when the rain fell, water ran down the sides of the dunes, carrying clay and silt particles with it.
如今降雨的时候，雨水会带着黏土和泥沙颗粒从沙丘两边往下流。
The synsedimentary deformation structures are common in eolian dunes, such as brecciated foresets, drag folds and overturned folds.
风成沙丘普遍存在角砾前积、拖曳褶皱和倒转褶皱等同沉积变形构造。
Ribbons of dunes trap the rains.
带状沙丘困住了雨水。
In the northwest, the dunes are interrupted by cityscape.
在西北方向，沙丘则被城市所截断。
It is backed by sand dunes on which two shaggy camels rest.
两头毛茸茸的骆驼背靠沙丘休憩。
The coastal plain consists mainly of sand dunes and polders.
沿海平原主要包括沙丘和低田。
The ripples it shows are sand dunes more than 100 metres high.
上面的波纹显示，沙丘高度超过100米。
Wild camels and sand dunes in empty southeast quarter of Qatar.
卡塔尔荒凉的东南部的野骆驼及沙丘。
The air is cool and sweet, and the dunes glow under the oval moon.
空气凉爽，带着甜味。沙丘在椭圆的月亮下发出微光。
Winds push the sand dunes eastward past Har Nuur and the nearby mountains.
风吹得沙丘向东推进，越过哈尔湖和附近的山区。
I didn't know there were sand dunes that would take over an hour to climb.
我没想到爬这些沙丘竟要花一个小时。
There was little loose sand, and most of it had formed into low dunes.
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。
This journey marks my first visit to the palatial sand dunes of Sossusvlei.
这次旅行标志着我首次访问壮丽的索苏斯维雷沙丘。
Ahul held on tightly to the giraffe as it raced across sand dunes and past trees.
长颈鹿跑过沙丘、穿越树林时，阿哈紧紧抓着长颈鹿。
Sand is blown up the gentle slopes and falls down the steep lee side of the dunes.
沙粒被吹至缓坡，沿沙丘陡峭的背风面滑落。
In his novel "dune", Frank Herbert imagined a planet covered largely by sand dunes.
在小说《沙丘》中，作者FrankHerbert设想了一个主要被沙丘覆盖的星球。
Strong winds create huge sand dunes near the water, some of which are partly submerged.
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。
These large dunes facing the river valley are promoted as the highest dunes in the world.
这些面朝河谷的巨大的沙丘被认为是世界上最高的沙丘。
The dunes arise from a complex relationship between the sandy surface and high winds on Mars.
沙漠表面和火星疾风之间复杂的关系导致了沙丘的隆起。
These strangely shaped dunes are known as barchan dunes and are common on both Earth and Mars.
形状怪异的沙丘是地球和火星上比较常见的新月沙丘。
Today life-size metal silhouettes of fighting soldiers lurk among the tall grasses in the sand dunes.
今天，真人大小的战士金属塑像已经被沙丘上高高的野草所掩映。
Today life-size metal silhouettes of fighting soldiers lurk among the tall grasses in the sand dunes.
今天，真人大小的战士金属塑像已经被沙丘上高高的野草所掩映。
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