dust devil

简明释义

尘卷风

英英释义

例句

1.The children were fascinated by the dust devil 尘旋 that danced across the field.

孩子们对在田野上舞动的dust devil 尘旋感到着迷。

2.Meteorologists often study dust devils 尘旋 to understand their formation and behavior.

气象学家经常研究dust devils 尘旋以了解它们的形成和行为。

3.While driving through the desert, we spotted a small dust devil 尘旋 swirling in the distance.

在穿越沙漠时，我们看到远处有一个小的dust devil 尘旋在旋转。

4.We had to be careful while hiking because a dust devil 尘旋 suddenly appeared on the trail.

我们在徒步旅行时必须小心，因为一股dust devil 尘旋突然出现在小径上。

5.As the wind picked up, a large dust devil 尘旋 formed near the old barn.

当风加大时，一个大的dust devil 尘旋在旧谷仓附近形成。

作文

In the vast and arid landscapes of the American Southwest, one can often witness a fascinating meteorological phenomenon known as a dust devil. A dust devil is a small, rotating column of air that picks up loose dust and debris from the ground, creating a visible whirl of dust that dances across the desert floor. These swirling vortices can vary in size and intensity, sometimes reaching heights of several hundred feet. Although they may seem like mere curiosities, dust devils are a testament to the dynamic nature of our atmosphere and the forces that shape our environment.The formation of a dust devil typically occurs on hot, sunny days when the ground heats up rapidly. As the surface temperature rises, warm air near the ground becomes less dense and begins to rise. This rising warm air can create a vacuum effect that draws in cooler air from the surrounding areas. When conditions are just right, this interaction can lead to the development of a rotating column of air—a dust devil.While dust devils are generally harmless, they can be quite powerful and unpredictable. They can lift small objects, such as leaves or lightweight debris, into the air, and in rare cases, they have been known to cause minor damage to structures or vehicles. Observers often find themselves captivated by the sight of a dust devil, as it twirls and spins, leaving a trail of dust in its wake. The ephemeral nature of these phenomena adds to their allure, as they can appear suddenly and vanish just as quickly.In addition to their aesthetic appeal, dust devils also play a role in the local ecosystem. By stirring up dust and particles, they can help to disperse seeds and nutrients across the landscape. This process can promote plant growth in arid regions, where vegetation is often sparse. Furthermore, dust devils can influence local weather patterns by affecting humidity levels and temperature. As they rise into the atmosphere, they can carry moisture and heat upwards, potentially impacting cloud formation and precipitation.For scientists and meteorologists, studying dust devils provides valuable insights into atmospheric dynamics and the behavior of wind patterns. Researchers use various tools, including drones and weather balloons, to gather data about these fascinating whirlwinds. Understanding how dust devils form and behave can help improve weather forecasting and contribute to our knowledge of climate change.In conclusion, the phenomenon of the dust devil is a striking example of nature's power and beauty. Whether observed from a distance or experienced up close, these swirling columns of dust remind us of the intricate processes at work in our environment. They highlight the importance of understanding our atmosphere and the delicate balance that sustains life on Earth. So next time you find yourself in a dry, open area, keep an eye out for a dust devil; you might just witness a captivating display of nature in motion.

在美国西南部广阔而干燥的土地上，人们常常能目睹一种迷人的气象现象，称为尘旋。尘旋是一种小型旋转的空气柱，它从地面上卷起松散的灰尘和碎屑，形成一个可见的尘土漩涡，在沙漠地面上舞动。这些旋转的涡流可以变化大小和强度，有时可以达到几百英尺的高度。尽管它们看似只是好奇的自然现象，尘旋却证明了我们大气的动态特性以及塑造环境的力量。尘旋的形成通常发生在炎热、阳光明媚的日子里，当地面迅速升温时。随着表面温度的升高，靠近地面的暖空气变得密度较低并开始上升。这种上升的暖空气可以产生真空效应，从周围地区吸引冷空气。当条件恰到好处时，这种相互作用可以导致一个旋转的空气柱的形成——即尘旋。虽然尘旋通常是无害的，但它们可能相当强大且不可预测。它们可以将小物体，如树叶或轻质碎屑，卷入空中，偶尔也会造成建筑物或车辆的轻微损坏。观察者常常被尘旋的景象所吸引，看到它旋转和盘旋，留下尘土的痕迹。这些现象的短暂性增加了它们的魅力，因为它们可以突然出现，并同样迅速消失。除了美学吸引力之外，尘旋在当地生态系统中也发挥着作用。通过搅动灰尘和颗粒，它们可以帮助在干旱地区传播种子和养分。这一过程可以促进植物在植被稀疏的地区生长。此外，尘旋还可以通过影响湿度水平和温度来影响当地的天气模式。当它们上升到大气中时，可以将水分和热量向上输送，潜在地影响云的形成和降水。对于科学家和气象学家来说，研究尘旋提供了对大气动力学和风模式行为的宝贵见解。研究人员使用各种工具，包括无人机和气象气球，收集有关这些迷人旋涡的数据。了解尘旋的形成和行为可以帮助改善天气预报，并有助于我们对气候变化的认识。总之，尘旋现象是自然力量和美的一个显著例子。无论是从远处观察还是近距离体验，这些旋转的尘土柱都提醒我们环境中复杂的过程。它们突显了理解我们大气的重要性以及维持地球生命的微妙平衡。因此，下次你身处干燥开阔的区域时，留意一下尘旋; 你可能会目睹自然运动的迷人展示。