4周搞定2000+托福核心词
沙丘
dune
常考释义
Similarly, wind action has scoured fine particles away from large areas, depositing them elsewhere as vast sand seas dominated by dunes or in sheets of loess (fine-grained soil deposits).
同样，风力作用也将细颗粒从大片的区域吹走，使这些细颗粒在其他地方堆积成为由沙丘和黄土（精细的土壤沉积物）组成的茫茫沙海。
来源于：阅读OFFICIAL51 P2n. 沙丘
They have written about it in fiction, from Rider Haggard’s “She” to Frank Herbert’s “Dune”
从瑞德•哈葛德的《她》到弗兰克•赫伯特的《沙丘》，人们在科幻小说中也多有描述。
Similarly, wind action has scoured fine particles away from large areas, depositing them elsewhere as vast sand seas dominated by dunes or in sheets of loess (fine-grained soil deposits).
同样，风力作用也将细颗粒从大片的区域吹走，使这些细颗粒在其他地方堆积成为由沙丘和黄土（精细的土壤沉积物）组成的茫茫沙海。
来源于：阅读OFFICIAL51 P2Raised beaches often consist of areas of sand, pebbles, or dunes, sometimes containing seashells or piles of debris comprising shells and bones of marine animals used by humans.
海滩高地通常由含有沙地、卵石、或沙丘的地区构成，有时（这些区域）还包含贝壳或者碎片堆，包括贝壳和被人类使用过后的海洋动物的骨头。
来源于：阅读OFFICIAL49 P1These included a common mammalian fauna of large mammals, a common flora composed of broad grasslands as well as wind-swept dunes and tundra, and a common climate with cold, dry winters and somewhat warmer summers.
其中包括，这三个地方都有常见的由大型哺乳动物组成的哺乳动物群和由广袤的草地、寒风凌厉的沙丘和冻原组成的植物群，以及冬季寒冷干燥、夏季校暖和的气候。
来源于：阅读OFFICIAL45 P1Second, as you know, sand dunes contain other types of particles, besides sand, including clay and silt.
第二，你们知道，沙丘中含有其他种类的粒子，除了沙子之外，还包括黏土和泥沙。
来源于：听力OFFICIAL9 L5Now, 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，雨水会沿着沙丘两边留下，带走黏土和泥沙颗粒。
来源于：听力OFFICIAL9 L5Now, the older lakes, about half the formations, the ones that started forming 37, 000 years ago, the limestone formations we see, they're up to a kilometer long, but only a few meters wide, and they're scattered along the desert floor, in valleys between the dunes.
Now, the older lakes, about half the formations, the ones that started forming 37, 000 years ago, the limestone formations we see, they're up to a kilometer long, but only a few meters wide, and they're scattered along the desert floor, in valleys between the dunes.
来源于：听力OFFICIAL9 L5So, during the second rainy period, the dunes were kind of chopped up at the top, full of hollows and ridges, and these hollows would've captured the rain right there on the top.
So, during the second rainy period, the dunes were kind of chopped up at the top, full of hollows and ridges, and these hollows would've captured the rain right there on the top.
来源于：听力OFFICIAL9 L5But there were thousands of years of wind between the two rainy periods, reshaping the dunes.
而在两个雨季之间几千年来刮风不止啊，这就重新将沙丘塑形了。
来源于：听力OFFICIAL9 L537, 000 years ago, the dunes were probably nicely rounded at the top, so the water just ran right down their sides to the desert floor.
在37000年前湖泊形成的时候，沙丘的顶部很可能是圆状的，因此雨水就只是从两边顺势留下到沙漠地板上。
来源于：听力OFFICIAL9 L5Well, there are some ideas about that, and they have to do with the shapes of the sand dunes, when the lakes were formed.
嗯，这里有一些说法，这些沉积矿跟沙丘的形状有关。
来源于：听力OFFICIAL9 L5以上图片仅供学习交流使用，版权归原作者所有，如有侵权，请与我方联系
