particulatematter

Particulate Matter

Particulate matter（PM）是指悬浮在空气中细小的固体颗粒和液体滴，通常包括尘埃、烟雾和其他微小物质。它是一种重要的空气污染物，对人类健康和环境有显著影响。

词汇分析

• “Particulate matter”是一个名词短语，通常作为一个整体来使用，表示空气中的微小颗粒物。

• 该词没有常见的形容词形式，但可以与形容词搭配使用，如“fine particulate matter”（细颗粒物）。

词语辨析

• 与“airborne particles”相比，particulate matter更强调其对空气质量的影响。

• 与“dust”相比，particulate matter的范围更广，包括多种不同类型的颗粒物。

词汇扩充

• PM2.5：指直径小于2.5微米的颗粒物。

• PM10：指直径小于10微米的颗粒物。

近义词与反义词

• 近义词：airborne particles（空气中的颗粒），aerosols（气溶胶）。

• 反义词：clean air（清洁空气），purified air（净化空气）。

词典引用

• Collins Dictionary: Particulate matter refers to tiny particles that are suspended in the air and can affect health.

• Oxford Dictionary: Particulate matter is defined as a complex mixture of extremely small particles and liquid droplets.

用法

• The levels of particulate matter in the city exceeded safety standards.

  该城市的颗粒物水平超过了安全标准。

• Exposure to particulate matter can lead to serious health problems.

  暴露于颗粒物可能导致严重的健康问题。

• Many cities are implementing measures to reduce particulate matter emissions.

  许多城市正在采取措施减少颗粒物排放。

• Children and the elderly are especially vulnerable to particulate matter.

  儿童和老年人对颗粒物特别敏感。

• Air quality reports often highlight levels of particulate matter.

  空气质量报告通常会突出颗粒物的水平。

• Reducing particulate matter can improve public health outcomes.

  减少颗粒物可以改善公共健康结果。

• Industrial activities are a significant source of particulate matter.

  工业活动是颗粒物的重要来源。

• Particulate matter pollution can affect visibility and climate.

  颗粒物污染会影响能见度和气候。

• Regulations are being put in place to limit particulate matter in the atmosphere.

  正在制定规定以限制大气中的颗粒物。

• The presence of particulate matter in the air can lead to respiratory issues.

  空气中颗粒物的存在可能导致呼吸问题。

• Monitoring particulate matter levels is crucial for environmental health.

  监测颗粒物水平对环境健康至关重要。

• People with pre-existing conditions should avoid areas with high particulate matter.

  有基础疾病的人应避免高颗粒物的地区。

• The particulate matter concentration in urban areas is often higher than in rural areas.

  城市地区的颗粒物浓度通常高于农村地区。

• Research continues to uncover the effects of particulate matter on human health.

  研究继续揭示颗粒物对人类健康的影响。

• Government initiatives aim to reduce particulate matter from transportation sources.

  政府倡议旨在减少交通源的颗粒物。

• Seasonal variations can impact the levels of particulate matter in the air.

  季节变化会影响空气中颗粒物的水平。

• Public awareness of particulate matter has increased in recent years.

  近年来，公众对颗粒物的关注增加。

• Efforts to reduce particulate matter have led to improved air quality in many cities.

  减少颗粒物的努力使许多城市的空气质量得到了改善。