Nitrate content in ground water accumulates obviously with the increase of N-fertilizer applied, so the potential pollution should not be ignored.

随着施N时间的推移和施用量的增加，地下水中硝态氮具有明显的积累趋势，潜在污染不容忽视；

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Veterinary drugs or their metabolites could be discharged to the environment, and have potential pollution effect on ecosystem at different levels.

兽药经动物代谢后以原型或代谢产物进入环境，对环境潜在的影响已经成为国内外关注的热点。

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Excess nitrogen and phosphorus nutrients due to large quantities of feed imports, can lead to problems with manure disposal and pose a potential pollution risk.

大量的饲料进口产生过多的氮磷营养物，将导致粪便处理的问题，并构成潜在的污染风险。

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Instead, they found high caffeine levels near Carl Washburne State Park and Cape Lookout, two areas not near the potential pollution sources, and low levels of caffeine near large population centers such as Astoria, Warrenton and Coos Bay.

CNN: Researchers find caffeine in waters off Oregon

Glassification of nuclear wastes also has great potential in a pollution-conscious world.

FORBES: The Trials Of Amory Houghton Jr.

If these needed protein sources were to come primarily from livestock there is the very real potential for catastrophic pollution of water and land, not to mention the exponential increase in carbon emissions.

CNN: Oceans: Environmental victim or savior?