primary pollutant

简明释义

初始污染物

英英释义

例句

1.To improve air quality, cities need to monitor primary pollutants 主要污染物 regularly.

为了改善空气质量，城市需要定期监测主要污染物 primary pollutants。

2.Carbon monoxide is a common primary pollutant 主要污染物 found in urban areas.

一氧化碳是城市地区常见的主要污染物 primary pollutant。

3.Vehicles are significant sources of primary pollutants 主要污染物 like nitrogen oxides.

机动车是氮氧化物等主要污染物 primary pollutants的重要来源。

4.Sulfur dioxide is classified as a primary pollutant 主要污染物 due to its role in acid rain formation.

二氧化硫被归类为主要污染物 primary pollutant，因为它在酸雨形成中起着重要作用。

5.The government has implemented regulations to reduce primary pollutants 主要污染物 from factories.

政府已经实施了减少工厂排放的主要污染物 primary pollutants的规定。

作文

Air pollution is one of the most pressing environmental issues of our time, affecting millions of people worldwide. Among the various types of pollutants that contribute to this problem, the concept of a primary pollutant (初级污染物) is particularly significant. A primary pollutant is defined as a substance directly emitted into the atmosphere from a source, without undergoing any transformation. These pollutants are often the result of human activities such as industrial processes, transportation, and agricultural practices.One of the most common examples of a primary pollutant is carbon monoxide (CO), which is primarily released from vehicle exhaust and industrial emissions. This colorless, odorless gas can have serious health effects, especially in poorly ventilated areas, as it interferes with the body’s ability to transport oxygen. Another notable primary pollutant is sulfur dioxide (SO2), which is produced by the burning of fossil fuels like coal and oil. Sulfur dioxide can lead to respiratory problems and is also a precursor to acid rain, which can severely damage ecosystems and structures.The impact of primary pollutants on air quality is profound. They contribute significantly to the formation of secondary pollutants, which are created when primary pollutants undergo chemical reactions in the atmosphere. For instance, nitrogen oxides (NOx), which are also considered primary pollutants, can react with volatile organic compounds (VOCs) in the presence of sunlight to form ground-level ozone, a major component of smog. This secondary pollutant poses serious health risks, including exacerbating asthma and other respiratory conditions.To combat the effects of primary pollutants, many countries have implemented regulations aimed at reducing emissions from key sources. For example, stricter vehicle emission standards have been established to limit the amount of carbon monoxide and nitrogen oxides released into the atmosphere. Additionally, transitioning to cleaner energy sources, such as wind and solar power, can significantly decrease the reliance on fossil fuels, thereby reducing the emission of primary pollutants like sulfur dioxide.Public awareness and education are also crucial in addressing the issue of air pollution. Individuals can make a difference by reducing their use of personal vehicles, opting for public transport, cycling, or walking whenever possible. Furthermore, supporting policies that promote clean air initiatives can help drive change at the governmental level.In conclusion, understanding the role of primary pollutants (初级污染物) in air quality is essential for developing effective strategies to mitigate their impact. By recognizing the sources and consequences of these pollutants, we can take informed actions to protect our environment and public health. The fight against air pollution requires a collective effort from individuals, industries, and governments alike, and addressing primary pollutants is a critical step in this ongoing battle.

空气污染是我们时代最紧迫的环境问题之一，影响着全球数百万人。在导致这一问题的各种污染物中，初级污染物（primary pollutant）的概念尤为重要。初级污染物被定义为直接从源头排放到大气中的物质，未经过任何转化。这些污染物通常是人类活动的结果，如工业过程、交通运输和农业实践。一个常见的初级污染物的例子是一氧化碳（CO），它主要来自汽车排放和工业排放。这种无色无味的气体可能对健康造成严重影响，尤其在通风不良的区域，因为它会干扰身体运输氧气的能力。另一个显著的初级污染物是二氧化硫（SO2），它是燃烧煤炭和石油等化石燃料产生的。二氧化硫会导致呼吸问题，并且还是酸雨的前体，酸雨会严重破坏生态系统和建筑物。初级污染物对空气质量的影响是深远的。它们显著促进了二次污染物的形成，二次污染物是在大气中经过化学反应后由初级污染物生成的。例如，氮氧化物（NOx）也被视为初级污染物，当它们在阳光照射下与挥发性有机化合物（VOCs）反应时，会形成地面臭氧，这是一种雾霾的主要成分。这种二次污染物对健康构成严重风险，包括加重哮喘和其他呼吸系统疾病。为了应对初级污染物的影响，许多国家实施了旨在减少主要来源排放的法规。例如，已经建立了更严格的汽车排放标准，以限制一氧化碳和氮氧化物排放到大气中的数量。此外，转向更清洁的能源来源，如风能和太阳能，可以显著减少对化石燃料的依赖，从而减少像二氧化硫这样的初级污染物的排放。公众意识和教育在解决空气污染问题中也至关重要。个人可以通过减少个人车辆的使用，尽可能选择公共交通、骑自行车或步行来做出改变。此外，支持促进清洁空气倡议的政策可以帮助推动政府层面的变革。总之，理解初级污染物（primary pollutants）在空气质量中的作用，对于制定有效的减缓其影响的策略至关重要。通过认识这些污染物的来源和后果，我们可以采取知情的行动来保护我们的环境和公众健康。与空气污染作斗争需要个人、行业和政府的共同努力，而解决初级污染物问题是这一持续斗争的关键一步。