circumpolar

简明释义

英[ˌsɜːkəmˈpəʊlə(r)]美[ˌsɜːrkəmˈpolər]

adj. 极地附近的；天极附近的

n. 周极星；拱极星

英英释义

单词用法

同义词

反义词

例句

1.The Antarctic Circumpolar Wave (ACW) is a newly discovered ocean phenomenon.

南极绕极波是近年来发现的海洋现象。

2.First, the chilly Malvinas Current, a north-flowing branch of the Antarctic Circumpolar Current, flows north along the edge of the South American continental shelf.

首先，环南极洋流的一支——马尔维纳斯寒流向北流动，流经南美洲大陆架的边缘。

3.Polar bear Status Report polar bears are a potentially threatened (not endangered) species living in the circumpolar north.

北极熊状况陈述北极熊是一个潜在地被要挟的(没风险的)品种寓居在极地四周北部。

4.You sail into a bay in bright sunshine and air scrubbed clean by the ceaseless circumpolar wind.

当你在明亮的阳光下驶入海湾，空气因风暴的反复冲刷而清澈透明。

5.The Antarctic circumpolar current in this area is wind-induced and is also forced by density field.

该海区的南极绕极流既是风生的，也受到密度场的影响。

6.Any of various short-tailed furry-footed rodents of circumpolar distribution.

极地附近分布的各种短尾、脚上有毛的啮齿动物。

7.Wildlife in circumpolar 环极的 regions has adapted to extreme conditions.

生活在环极的地区的野生动物已经适应了极端的环境。

8.Many indigenous cultures have myths related to circumpolar 环极的 constellations.

许多土著文化都有与环极的星座相关的神话。

9.The circumpolar 环极的 regions are known for their unique ecosystems.

这些环极的地区以其独特的生态系统而闻名。

10.Astronomers study the circumpolar 环极的 stars that never set below the horizon.

天文学家研究那些永不落下地平线的环极的星星。

11.The circumpolar 环极的 areas experience long periods of daylight in summer.

在夏季，环极的地区会经历长时间的日照。

作文

The term circumpolar refers to regions or phenomena that are located around the poles of the Earth, particularly the North and South Poles. Understanding this concept is crucial for comprehending various geographical, astronomical, and environmental aspects of our planet. In this essay, we will explore the significance of circumpolar regions, their unique characteristics, and the impact they have on global climate and ecosystems.Firstly, circumpolar areas are defined by their proximity to the poles, where the latitude is typically above 66.5 degrees north or south. This means that the circumpolar regions experience extreme daylight variations throughout the year. For instance, during the summer months, the sun does not set for an extended period, creating the phenomenon known as the Midnight Sun. Conversely, in winter, these areas undergo polar nights, where the sun remains below the horizon for several weeks. This unique pattern of sunlight affects the local climate and biodiversity significantly.One of the most fascinating aspects of circumpolar regions is their rich biodiversity. Despite the harsh conditions, many species have adapted to thrive in these environments. For example, polar bears, seals, and various migratory birds have evolved to survive the extreme cold and the seasonal changes in light. The Arctic tundra, a circumpolar biome, is home to unique flora and fauna that cannot be found elsewhere. The adaptations of these organisms provide valuable insights into the resilience of life and the effects of climate change.Furthermore, the circumpolar regions play a critical role in the Earth’s climate system. They act as a cooling mechanism for the planet, reflecting sunlight back into space due to the extensive ice cover. However, with global warming, these ice caps are melting at an alarming rate, leading to rising sea levels and changes in weather patterns worldwide. The loss of ice also affects the habitats of circumpolar species, threatening their survival and altering the food chain.In addition to ecological concerns, the circumpolar regions are also significant for scientific research. Scientists study these areas to understand climate change better, monitor wildlife populations, and investigate geological formations. The data collected from circumpolar regions can help predict future climate scenarios and inform conservation efforts. Moreover, indigenous communities living in these areas possess invaluable traditional knowledge about the land and its resources, which can contribute to sustainable management practices.In conclusion, the term circumpolar encompasses a wide range of geographical and ecological phenomena that are vital to our understanding of the Earth. From the unique adaptations of wildlife to the critical role these regions play in the global climate system, circumpolar areas offer a wealth of knowledge and insight. As we face the challenges posed by climate change, it is essential to pay attention to these regions and work towards their preservation, ensuring that future generations can continue to learn from and appreciate the wonders of our planet's circumpolar regions.

“circumpolar”这个词指的是位于地球两极周围的地区或现象，特别是北极和南极。理解这个概念对于理解我们星球的各种地理、天文学和环境方面至关重要。在这篇文章中，我们将探讨circumpolar区域的重要性、它们的独特特征以及它们对全球气候和生态系统的影响。首先，circumpolar地区的定义是靠近极地，纬度通常在北纬或南纬66.5度以上。这意味着circumpolar区域在一年中经历极端的日照变化。例如，在夏季，太阳会在较长时间内不落下，形成所谓的午夜太阳现象。相反，在冬季，这些地区则会经历极夜，太阳在数周内始终低于地平线。这种独特的日光模式显著影响了当地的气候和生物多样性。circumpolar地区最迷人的一个方面是其丰富的生物多样性。尽管条件恶劣，许多物种已经适应了在这些环境中生存。例如，北极熊、海豹和各种候鸟已经进化出能够在极寒和季节性光照变化中生存的能力。北极苔原作为一种circumpolar生物群落，拥有独特的动植物群，这些动植物在其他地方无法找到。这些生物的适应能力为我们提供了关于生命韧性和气候变化影响的宝贵见解。此外，circumpolar地区在地球气候系统中发挥着关键作用。由于广泛的冰盖，它们充当了地球的冷却机制，将阳光反射回太空。然而，随着全球变暖，这些冰盖以惊人的速度融化，导致海平面上升和全球天气模式的变化。冰层的消失也影响了circumpolar物种的栖息地，威胁它们的生存并改变食物链。除了生态问题，circumpolar地区对科学研究也具有重要意义。科学家们研究这些地区，以更好地理解气候变化，监测野生动物种群，并调查地质构造。从circumpolar地区收集的数据可以帮助预测未来的气候情景，并为保护工作提供信息。此外，生活在这些地区的土著社区拥有关于土地及其资源的宝贵传统知识，可以促进可持续管理实践。总之，circumpolar这个术语涵盖了一系列对我们理解地球至关重要的地理和生态现象。从野生动物的独特适应到这些地区在全球气候系统中的关键角色，circumpolar区域提供了丰富的知识和见解。面对气候变化带来的挑战，我们必须关注这些地区，并努力保护它们，以确保未来几代人能够继续学习和欣赏我们星球的circumpolar区域的奇观。