Tests showed it was contaminated by listeria and other bacteria.

检测表明它感染有李斯特菌和其他细菌。

《柯林斯英汉双解大词典》

This scenario begins with the planting of hyperaccumulating species in the target area, such as an abandoned mine or an irrigation pond contaminated by runoff.

这种情形始于在目标地区（如废弃矿井或被污水污染的灌溉池）种植超积累物种。

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Attracting numbers of birds continually to the same spot can be harmful to them, particularly species that pick food from the ground contaminated by the droppings of other birds.

持续吸引大量的鸟类到同一地点对它们来说是有害的，尤其是那些在被其他鸟类粪便污染的土地上觅食的鸟类。

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At least 200 others have contracted the disease, which is caused by contaminated food or water and can be fatal if not treated.

VOA: standard.2009.09.14

Children generally pick up lead in soil that has been contaminated by air pollution and dumping.

WSJ: Neurocriminology: Inside the Criminal Mind

Water may become contaminated by a major storm, and a rising sea level can contaminate wells.

NPR: In a Strategic Reversal, Dutch Embrace Floods

You get it by drinking water or eating food that's been contaminated by an infected person.

CNN: Cyclospora infection