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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Of course, such intensive operations cause other problems as well, notably the disposal of large amounts of manure.

当然，这种密集的饲养方式同样会有一些问题，如需处理大量的肥料。

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However. In many areas the disposal of animal manure has become a critical problem, especially from feedlots and dairies.

然而，在许多区域中，动物粪肥的处理已经变得一个紧要关头的问题，尤其从饲育场和乳酪农场。

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