Pollution污染

Smog hangs over the city on windless days.在无风的日子里，烟雾笼罩着这座城市。

The factory reduced carbon emissions last year.这家工厂去年减少了碳排放。

The river became toxic after the spill.泄漏后，这条河变得有毒了。

Untreated sewage flowed into the sea.未经处理的污水流入了海里。

Most of the trash from the city goes to a landfill.这座城市的大部分垃圾都被送到垃圾填埋场。

Pesticide runoff polluted the nearby stream.农药径流污染了附近的小溪。

Particulate matter can damage the lungs.颗粒物会损伤肺部。

Deforestation threatens many animal habitats.森林砍伐威胁着许多动物的栖息地。

The lab found a contaminant in the water sample.实验室在水样中发现了一种污染物。

A residue of chemicals remained on the glass.玻璃上还残留着化学物质。

Incineration is used to dispose of some medical waste.焚烧常用于处理部分医疗废物。

Biodegradable packaging breaks down more quickly.可降解包装分解得更快。

Fossil fuels are a major source of pollution.化石燃料是污染的主要来源之一。

Air quality can deteriorate quickly on hot days.在炎热的日子里，空气质量可能会迅速恶化。

Plastic waste can accumulate along the shore.塑料垃圾会在海岸边不断堆积。

Proper waste disposal helps protect the environment.正确的垃圾处置有助于保护环境。

Oil leaks can contaminate drinking water.漏油会污染饮用水。

Soil degradation makes farming harder.土壤退化让耕作变得更困难。

Governments regulate factory emissions to protect the air.政府监管工厂排放，以保护空气。

Hazardous waste must be handled with care.危险废物必须小心处理。