blown dust

简明释义

风尘;

英英释义

例句

1.The city had to issue a health warning due to high levels of blown dust in the air.

由于空气中扬尘浓度过高，城市不得不发布健康警告。

2.Drivers were advised to stay off the roads because of the blown dust reducing visibility.

由于扬尘降低了能见度，司机被建议不要上路。

3.Farmers often face challenges when crops are covered in blown dust from nearby construction sites.

农民常常面临挑战，因为附近建筑工地的扬尘覆盖了作物。

4.The visibility was severely reduced due to the strong winds carrying the blown dust.

由于强风携带的扬尘，能见度严重降低。

5.During the sandstorm, the blown dust made it difficult to breathe.

在沙尘暴期间，扬尘使呼吸变得困难。

作文

In many arid and semi-arid regions around the world, the phenomenon of blown dust (飞扬的尘土) is a common occurrence. This natural event can significantly impact both the environment and human health. Understanding the causes and effects of blown dust is crucial for developing effective strategies to mitigate its adverse impacts.The primary cause of blown dust is the strong winds that sweep across dry landscapes, particularly during periods of drought. When the soil lacks moisture, it becomes loose and easily lifted by gusts of wind. This can create vast clouds of dust that travel long distances. Regions such as the Sahara Desert, the Great Basin in the United States, and parts of Australia frequently experience this phenomenon. As the dust is carried by the wind, it can affect air quality in distant locations, leading to respiratory issues among populations far from the source.Moreover, blown dust can have detrimental effects on agriculture. The dust particles can settle on crops, blocking sunlight and hindering photosynthesis. Additionally, the abrasive nature of the dust can physically damage plants, reducing their yield and quality. Farmers in affected areas often struggle to maintain their livelihoods due to these challenges, which can lead to economic instability.Environmental consequences of blown dust are also significant. Dust storms can erode soil, deplete nutrients, and contribute to desertification. When fertile land turns to desert, it not only affects local ecosystems but also contributes to global climate change. Dust particles play a role in cloud formation and can influence weather patterns, making blown dust a factor in climate variability.In addition to environmental and agricultural impacts, blown dust poses serious health risks. Fine dust particles can penetrate deep into the lungs, leading to chronic respiratory diseases such as asthma and bronchitis. Vulnerable populations, including children and the elderly, are particularly at risk. Communities often face increased healthcare costs and reduced quality of life due to the prevalence of dust-related health issues.To combat the effects of blown dust, various strategies can be implemented. Planting vegetation in vulnerable areas can help stabilize the soil and reduce dust emissions. Additionally, adopting sustainable agricultural practices, such as crop rotation and cover cropping, can enhance soil health and moisture retention. Governments and organizations can also invest in monitoring systems to track dust events and issue warnings to protect public health.In conclusion, blown dust (飞扬的尘土) is a complex issue with far-reaching implications for the environment, agriculture, and human health. By understanding its causes and effects, we can better prepare for and mitigate its impacts. Collaborative efforts between governments, scientists, and communities are essential to address this challenge effectively. Through proactive measures, we can work towards a healthier, more sustainable future in regions affected by blown dust.