particulates

简明释义

英[pɑːˈtɪkjʊlɪts]美[pɑrˈtɪkjəlɪts]

n. 微粒；大气尘；微粒物质；空气中微小颗粒（particulate 的复数形式）

英英释义

单词用法

同义词

反义词

例句

1.These particulates are small enough to penetrate human lung tissue, causing severe health problems.

这些颗粒足够小，能进入人的肺组织，引发严重的健康问题。

2.Air quality monitors showed concentrations of potentially dangerous particulates in the Pars air were above the recommended maximum.

空气质量监测显示，巴黎空气中的潜在危险颗粒浓度超过了最大建议值。

3.Avoid inhalation of dust, particulates and spray mist arising from the application of this preparation.

避免尘土的吸入，微粒物质和浪花薄雾出现从这种准备的应用。

4.Particulates, especially PM2.5's, have been shown to cause disease.

颗粒，特别是PM 2.5已经显示致病能力。

5.The inner layer is made of vinyl strips coated in a photocatalyst material that captures and neutralises harmful particulates in the air.

内层由乙烯基片组成，它被覆盖了光催化材料，这种基片可捕捉并中和空气中的有害颗粒。

6.As these rise, they latch on to dust in the air and become particulates, a quarter the size of a grain of sand.

上升过程中，这些元素附着在空气中的尘埃上，变成微粒，大小相当于一粒砂子的四分之一。

7.The study found that fine particulates (颗粒物) are more harmful than larger ones.

研究发现，细小的颗粒物（particulates）比较大的更有害。

8.Vehicles emit particulates (颗粒物) that contribute to air pollution.

车辆排放的颗粒物（particulates）会导致空气污染。

9.Filters can reduce the number of particulates (颗粒物) in indoor air.

过滤器可以减少室内空气中的颗粒物（particulates）数量。

10.The air quality report indicated high levels of particulates (颗粒物) in the city due to pollution.

空气质量报告显示，由于污染，城市中的颗粒物（particulates）水平很高。

11.Researchers are studying the effects of particulates (颗粒物) on respiratory health.

研究人员正在研究颗粒物（particulates）对呼吸健康的影响。

作文

In recent years, the term particulates (颗粒物) has become increasingly prominent in discussions about air quality and environmental health. Particulates refer to tiny solid or liquid particles suspended in the air, which can have significant effects on human health and the environment. These particles can originate from various sources, including vehicle emissions, industrial processes, and natural phenomena such as wildfires and volcanic eruptions. Understanding the nature and impact of particulates is crucial for developing effective policies to protect public health and mitigate environmental damage.The size of particulates is a critical factor in determining their potential health effects. Generally, particulates are classified into two categories based on their diameter: PM10 and PM2.5. PM10 refers to particles that are 10 micrometers or smaller, while PM2.5 includes particles that are 2.5 micrometers or smaller. Due to their small size, particulates can easily penetrate deep into the lungs and even enter the bloodstream, leading to a range of health issues, including respiratory diseases, cardiovascular problems, and even premature death.Research has shown that exposure to high levels of particulates can exacerbate existing health conditions, particularly among vulnerable populations such as children, the elderly, and individuals with pre-existing health issues. For instance, studies have found a strong correlation between elevated levels of particulates and increased hospital admissions for asthma and other respiratory illnesses. Furthermore, long-term exposure to particulates can lead to chronic health problems, significantly affecting the quality of life for many individuals.The environmental impact of particulates is equally concerning. These particles can contribute to the formation of smog and haze, reducing visibility and affecting ecosystems. Additionally, particulates can settle on surfaces, leading to soil and water contamination. The presence of heavy metals and other toxic substances in some particulates can further exacerbate these environmental issues, posing risks to wildlife and plant life.Addressing the challenges posed by particulates requires a multi-faceted approach. Governments and organizations worldwide are implementing regulations to limit emissions from industrial sources and vehicles. Advances in technology also play a vital role in reducing particulates in the atmosphere. For example, the development of cleaner fuels and more efficient engines can significantly decrease the number of particulates released into the air.Public awareness and education are essential components of tackling the issue of particulates. Communities can benefit from understanding the sources and health effects associated with particulates, empowering them to advocate for cleaner air and healthier environments. Simple actions, such as reducing car usage, supporting public transportation, and promoting green spaces, can collectively contribute to lowering particulates levels in urban areas.In conclusion, particulates (颗粒物) pose significant risks to both human health and the environment. By understanding their sources, impacts, and the measures needed to reduce their presence in our air, we can work towards a healthier future. It is imperative that individuals, communities, and governments collaborate to address this pressing issue, ensuring cleaner air and a better quality of life for all. The fight against particulates is not just an environmental concern; it is a public health imperative that requires immediate action and sustained commitment.

近年来，术语particulates（颗粒物）在空气质量和环境健康的讨论中变得越来越突出。Particulates指的是悬浮在空气中的微小固体或液体颗粒，这些颗粒对人类健康和环境有显著影响。这些颗粒可以来自多种来源，包括汽车排放、工业过程以及自然现象，如野火和火山喷发。理解particulates的性质及其影响对于制定有效政策以保护公众健康和减轻环境损害至关重要。Particulates的大小是决定其潜在健康影响的关键因素。通常，particulates根据直径分为两类：PM10和PM2.5。PM10指的是直径为10微米或更小的颗粒，而PM2.5则包括直径为2.5微米或更小的颗粒。由于其小尺寸，particulates可以轻易渗透到肺部深处，甚至进入血液，导致一系列健康问题，包括呼吸系统疾病、心血管问题，甚至早逝。研究表明，暴露于高水平的particulates会加重现有健康状况，尤其是在儿童、老年人和有健康问题的人群中。例如，研究发现particulates水平升高与哮喘和其他呼吸疾病住院人数增加之间存在强相关性。此外，长期暴露于particulates中可能导致慢性健康问题，显著影响许多人的生活质量。Particulates对环境的影响同样令人担忧。这些颗粒可以导致雾霾和烟雾的形成，降低能见度并影响生态系统。此外，particulates可以沉降在表面上，导致土壤和水源污染。一些particulates中重金属和其他有毒物质的存在可能进一步加剧这些环境问题，对野生动物和植物生命构成风险。解决particulates带来的挑战需要多方面的方法。世界各国的政府和组织正在实施法规，以限制工业源和车辆的排放。技术进步在减少大气中particulates方面也发挥着重要作用。例如，清洁燃料和更高效的发动机的发展可以显著减少释放到空气中的particulates数量。公众意识和教育是应对particulates问题的重要组成部分。社区可以通过了解particulates的来源和健康影响而受益，从而使他们能够倡导更清洁的空气和更健康的环境。简单的行动，如减少汽车使用、支持公共交通和促进绿色空间，可以共同帮助降低城市地区的particulates水平。总之，particulates（颗粒物）对人类健康和环境构成显著风险。通过理解其来源、影响以及减少其在空气中存在所需的措施，我们可以朝着更健康的未来努力。个人、社区和政府必须合作解决这一紧迫问题，确保更清洁的空气和更好的生活质量。对抗particulates不仅是环境问题；它是一个需要立即行动和持续承诺的公共健康迫切任务。