dune

简明释义

英[djuːn]美[duːn]

n. （由风吹积而成的）沙丘

复 数 d u n e s

英英释义

单词用法

同义词

反义词

例句

1.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。

2.When the dune dries in a day or so the wind will begin to reshape it once again.

经过一天左右的风吹和日晒，沙丘干燥起来，那时的风就会把它的形状重塑一次。

3.Now it is a tourist playground. Led by train staff, we climb a massive dune.

现在这里却是游客游玩的地方，在列车员的带领之下，我们爬上了一个巨大的沙丘。

4.Sandra Vernon, a 47-year-old mother of three in my class on the dune, egged me on.

桑德拉·弗农是一位和我一起在山丘上学习的学员，她已经47岁了，有3个孩子。

5.In one instance, scientists found that hundreds of cubic yards of sand had avalanched down the face of a dune.

在一个实例中，科学家们发现大量立方码的沙粒从沙丘的表面崩落。

6.Between the shore and the inland edge of the dune field, sand alternates with the vegetated ground.

在海岸与内陆沙丘地带的边缘之间，沙地与覆盖植被的地表交相辉映。

7.The children loved to climb the tall dune.

孩子们喜欢爬那座高高的沙丘。

8.We set up our tent at the base of the dune.

我们在沙丘的底部搭起了帐篷。

9.The wind shaped the dune into a beautiful curve.

风将沙丘塑造成了一个美丽的弧形。

10.There are many species of plants that can grow on a dune.

许多植物可以在沙丘上生长。

11.The dune was covered with footprints from hikers.

这座沙丘上留下了徒步旅行者的足迹。

作文

The vast landscape of the desert is often characterized by its stunning natural formations, one of which is the magnificent dune. A dune is a hill or ridge of sand that has been formed by the wind, typically found in deserts or near beaches. These formations can vary greatly in size and shape, from small ripples to towering mountains of sand. The formation of a dune begins when the wind blows sand particles across the ground. As these particles collide with obstacles, they accumulate and gradually build up into larger structures. Over time, with the continuous action of the wind, a dune can grow and change shape, creating a dynamic landscape that is both beautiful and ever-changing. One of the most fascinating aspects of dunes is their ability to shift and transform. The movement of sand can create various types of dunes, such as crescent-shaped barchan dunes, linear dunes, and star-shaped dunes. Each type has its own unique characteristics and forms based on wind direction and speed, as well as the availability of sand. For instance, barchan dunes are typically found in areas with limited sand supply and consistent wind direction, while star dunes occur in regions where winds blow from multiple directions. The ecological significance of dunes cannot be overlooked. They serve as important habitats for various flora and fauna, providing shelter and food sources for many species. Plants that grow on dunes have adapted to survive in harsh conditions, often developing deep root systems to anchor themselves against the shifting sands. These plants play a crucial role in stabilizing the dune ecosystem, preventing erosion and maintaining soil health. Additionally, animals such as lizards, rodents, and insects thrive in these environments, each contributing to the intricate web of life that exists within the dune system. Moreover, dunes hold cultural and recreational significance. Many people are drawn to these sandy landscapes for activities such as hiking, sandboarding, and photography. The picturesque scenery of dunes at sunset or sunrise is a sight to behold, attracting nature enthusiasts and tourists alike. In some cultures, dunes have historical importance, serving as landmarks or sites for traditional practices. However, human activities pose threats to the integrity of dunes. Urban development, off-road vehicle use, and climate change can lead to the degradation of these delicate ecosystems. It is essential to promote conservation efforts to protect dunes and their surrounding habitats. By raising awareness about the importance of dunes and implementing sustainable practices, we can help preserve these natural wonders for future generations to enjoy. In conclusion, the beauty and complexity of dunes make them a remarkable feature of our planet's landscape. From their formation and ecological roles to their cultural significance, dunes are more than just piles of sand; they are vibrant ecosystems that deserve our respect and protection. Understanding and appreciating the importance of dunes can inspire us to take action in safeguarding these unique environments, ensuring they remain a part of our natural heritage.

沙漠广阔的景观通常以其壮丽的自然形态为特征，其中之一就是宏伟的dune。dune是由风形成的沙丘或沙脊，通常在沙漠或海滩附近发现。这些形成物的大小和形状差异很大，从小波纹到高耸的沙山不等。dune的形成始于风吹动沙粒在地面上移动。当这些颗粒与障碍物碰撞时，它们会积累，逐渐堆积成更大的结构。随着时间的推移，在风的持续作用下，dune可以生长和改变形状，创造出既美丽又不断变化的景观。 dune最迷人的方面之一是它们的移动和转变能力。沙子的运动可以创造出各种类型的dune，例如新月形的巴尔汉dune、线性dune和星形dune。每种类型都有其独特的特征和形式，基于风的方向和速度，以及沙子供应的可用性。例如，巴尔汉dune通常出现在沙子供应有限且风向一致的地区，而星形dune则发生在风从多个方向吹来的地方。 dune的生态重要性不容忽视。它们作为各种植物和动物的重要栖息地，为许多物种提供庇护和食物来源。在dune上生长的植物已经适应了严酷的条件，通常发展出深根系以抵御流动的沙子。这些植物在稳定dune生态系统中发挥着至关重要的作用，防止侵蚀并维持土壤健康。此外，像蜥蜴、啮齿动物和昆虫等动物在这些环境中蓬勃发展，每种动物都为dune系统中存在的复杂生命网络作出贡献。 此外，dune还具有文化和娱乐意义。许多人被这些沙质景观吸引，进行徒步旅行、滑沙和摄影。在日落或日出时，dune的美丽景色令人叹为观止，吸引了自然爱好者和游客。在某些文化中，dune具有历史重要性，作为地标或传统实践的场所。 然而，人类活动对dune的完整性构成威胁。城市发展、越野车使用和气候变化可能导致这些脆弱生态系统的退化。促进保护工作以保护dune及其周边栖息地至关重要。通过提高人们对dune重要性的认识并实施可持续实践，我们可以帮助保护这些自然奇观，使后代能够享受。 总之，dune的美丽和复杂性使它们成为我们星球景观中的显著特征。从它们的形成和生态角色到它们的文化意义，dune不仅仅是沙堆；它们是充满活力的生态系统，值得我们的尊重和保护。理解和欣赏dune的重要性可以激励我们采取行动，保护这些独特的环境，确保它们继续成为我们自然遗产的一部分。