limestone

简明释义

英[ˈlaɪmstəʊn]美[ˈlaɪmstoʊn]

n. [岩] 石灰岩

复 数 l i m e s t o n e s

英英释义

单词用法

同义词

反义词

例句

1.The sea had eaten into the soft limestone cliffs on which they had been built.

海水已经侵蚀了他们建造出的软石灰岩峭壁。

2.It's one of the longest and deepest limestone caves not just in the country but in the world.

它不仅是美国最长最深的石灰岩洞穴之一，也是世界上最长最深的石灰岩洞穴之一。

3.Solutional processes have widened and deepened the grykes of the limestone pavement.

溶蚀作用使石灰石路面的灰岩深沟变宽变深。

4.These are generally fed by groundwater springs, and many issued from limestone massifs, such as the Atlas Mountains in Morocco.

它们通常由地下泉水供养，其中许多流自石灰岩山丘，如摩洛哥的阿特拉斯山脉。

5.When I was researching this for a study a few years ago, I visited a couple of these typical limestone caves, and they were all very wet, you know, from streams and rivers.

几年前我做这项研究时，我探访了其中几个比较典型的洞穴，它们都很潮湿，你们也知道这是因为小溪和河流的缘故。

6.Another difference, very important today for distinguishing between older lake beds and newer ones, is the location of the limestone formations.

如今在区分新老湖床方面非常重要的另一个不同点在于石灰岩地层的位置。

7.It was formed as a limestone cave during the glacial period.

它是于冰河时期形成的石灰岩洞。

8.The ancient buildings in the city were primarily constructed from limestone.

这座城市的古老建筑主要是用石灰岩建造的。

9.Many caves are formed in regions where limestone is prevalent.

许多洞穴形成在石灰岩丰富的地区。

10.The quarry produces high-quality limestone for construction.

这个采石场生产高质量的石灰岩用于建筑。

11.Farmers often use crushed limestone to improve soil quality.

农民常常使用碎石灰岩来改善土壤质量。

12.The chemical industry relies on limestone for producing lime.

化学工业依赖于石灰岩来生产石灰。

作文

Limestone is a sedimentary rock composed primarily of calcium carbonate (CaCO3). It is formed through the accumulation of marine organisms' remains, such as coral and shellfish, which over time, compact and cement together. This process can take thousands to millions of years, resulting in vast deposits of limestone（石灰岩） found in various parts of the world. The significance of limestone（石灰岩） extends beyond its geological formation; it plays a crucial role in various industries, including construction, agriculture, and environmental management. In construction, limestone（石灰岩） is widely used as a building material. Its durability and aesthetic appeal make it a popular choice for both structural and decorative purposes. Many historical buildings and monuments are made from limestone（石灰岩）, showcasing its long-standing importance in architecture. For instance, the Great Pyramid of Giza, one of the Seven Wonders of the Ancient World, is constructed from limestone（石灰岩） blocks that have stood the test of time. The beauty of limestone（石灰岩） can also be seen in modern homes, where it is used for countertops, flooring, and facades. In agriculture, limestone（石灰岩） is commonly used to improve soil quality. Farmers apply crushed limestone（石灰岩） to acidic soils to raise the pH level, making it more suitable for crops. This practice not only enhances soil fertility but also promotes better crop yields. Additionally, limestone（石灰岩） serves as a key ingredient in animal feed, providing essential calcium for livestock health. Environmental management is another area where limestone（石灰岩） proves invaluable. It is utilized in water treatment processes to neutralize acidic waters and remove impurities. The chemical properties of limestone（石灰岩） allow it to react with acids, effectively reducing acidity levels and improving water quality. Furthermore, limestone（石灰岩） is employed in carbon capture and storage technologies, helping to mitigate climate change by sequestering carbon dioxide emissions from industrial sources. Despite its numerous benefits, the extraction and processing of limestone（石灰岩） can have significant environmental impacts. Quarrying operations can lead to habitat destruction, soil erosion, and water pollution if not managed responsibly. Therefore, it is essential for industries to adopt sustainable practices when sourcing limestone（石灰岩）. This includes implementing measures to restore ecosystems after quarrying, minimizing waste during production, and exploring alternative materials where feasible. In conclusion, limestone（石灰岩） is a versatile and valuable resource that has shaped our environment and society in many ways. From its role in construction and agriculture to its contributions to environmental management, the importance of limestone（石灰岩） cannot be overstated. As we continue to utilize this natural resource, it is crucial to balance economic benefits with environmental stewardship to ensure that future generations can also enjoy the advantages that limestone（石灰岩） provides.