Industries pollute rivers by dumping poisonous chemicals into them.

工业企业向河流倾倒的有毒化学物质，污染了水源。

Dioxin is one of the poisonous chemicals in Agent Orange.

二噁英是橙剂中含有的一种有毒化学物质。

San Francisco said it makes sense that microplastics are harmful because they contain poisonous chemicals.

旧金山说，微塑料有害是有道理的，因为它们含有有毒化学物质。

Every packet of cigarettes contains poisonous chemicals that can result in lung cancer and heart disease.

每包烟都含可导致肺癌、心脏病的有毒化学物质。

Organic growers do not use poisonous chemicals to stop or control insects or unwanted plant growth.

有机种植者不得使用有毒的化学物质来阻止或控制昆虫及有害的植物生长。

Tobacco contains nicotine and other poisonous chemicals. These cause many diseases, like heart problems and cancer.

烟草含有尼古丁和其他有害化学物质，这些物质会引发许多疾病，如心脏疾病和癌症。

This saves the winemaker from having to use poisonous chemicals against such pests in his vineyard.

这使酿酒师不必在他的葡萄园里使用有毒化学物质来防治这些害虫。

Exposure to poisonous chemicals can also cause it.

接触有毒化学物质也可能导致它。

Officials reportedly are concerned about a possible poisonous chemical spread.

据报道，官员们担心有毒化学品可能会扩散。

As you read, the traps contained pheromones and poisonous chemicals, but the poison doesn't stay active for very long.

正如您所读到的，陷阱中含有信息素和有毒化学物质，但毒药的活性不会持续很长时间。

The higher levels of algae also produced more of a poisonous chemical that can cause problems for everything from shellfish to dolphins to sea lions.

藻类过度繁殖还会释放出更多的有毒化学物质，影响贝类、海豚及海狮等海洋生物的生存。

All that effort emits huge amounts of greenhouse gases, adds poisonous chemicals and concentrated nutrients to the soil, air, and our water sources, and erodes billions of tons of topsoil each year.

这些活动会排放大量的温室气体，将有毒物质和浓缩的营养物质排放到土壤、空气和水源中，并且每年侵蚀数十亿吨的表层土壤。

Mining coal has led to accidents and diseases that kill coal miners, and burning coal has coated our cities, homes and lungs with layers of soot and poisonous chemicals, and left behind piles of toxic ash that pollute waterways.

采煤导致了导致煤矿工人死亡的事故和疾病，燃烧的煤炭使我们的城市、房屋和肺部覆盖了一层层煤烟和有毒化学物质， 并留下了成堆的有毒灰烬， 污染了水道。