[ər pəˈluːʃn]

noun.

1.空气污染

Air pollution refers to the presence of harmful substances in the air, which can have negative effects on human health and the environment. This can be caused by natural sources such as volcanic eruptions or forest fires, but it is mainly caused by human activities such as industrial processes, transportation, and burning of fossil fuels.

空气污染是指空气中存在有害物质，这些物质对人类健康和环境都有负面影响。这可以由自然来源如火山喷发或森林火灾引起，但主要是由人类活动如工业过程、交通运输和燃烧化石燃料引起的。

例句：

1. Air pollution has become a major concern for many countries around the world.

空气污染已成为世界许多关注的重大问题。

2. The government has implemented strict regulations to reduce air pollution levels in the city.

已实施严格的法规来降低城市的空气污染水平。

3. Long-term exposure to air pollution can lead to respiratory diseases and other health problems.

长期暴露在空气污染中会导致呼吸疾病和其他健康问题。

4. The factory was fined for causing air pollution in the surrounding area.

该工厂因在周边地区造成空气污染而被罚款。

5. Many people wear masks to protect themselves from the harmful effects of air pollution.

许多人戴口罩来保护自己免受空气污染的危害。

同义词：

1. Smog - a type of air pollution that is a mixture of smoke and fog

雾霾 - 一种由烟雾和雾气混合而成的空气污染

2. Air contamination - the presence of harmful substances in the air

空气污染 - 空气中存在有害物质

3. Air quality degradation - the deterioration of the air due to pollution

空气质量下降 - 由于污染而导致空气恶化

编辑总结：

空气污染是一个严重的问题，对人类健康和环境都有着巨大的影响。我们每个人都应该尽自己的努力来减少空气污染，采取措施来保护我们的环境。也应该加强监管和执行相关法规，以减少工业活动和交通运输对空气质量造成的负面影响。只有通过共同努力，我们才能改善空气质量，保护我们的健康和地球。