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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The expanded production of meat has been facilitated by industrial feedlots, which bleed antibiotics and other noxious chemicals.

工业化养殖场通过喂养抗生素和其它有毒的化学药品，使得肉食扩大生产更为容易。

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The main production profit margin of medium-sized (100 ~ 499 head) feedlot was 18.02%, and highest among different scale feedlots. The management level of large-scale feedlots must be improved.

不同规模的牛场，主产品利润率以中型规模(100 ~ 499头)牛场最高，为18.02%，大型牛场经营管理水平有待提高。

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The main production profit margin of medium-sized (100 ~ 499 head) feedlot was 18.02%, and highest among different scale feedlots. The management level of large-scale feedlots must be improved.

不同规模的牛场，主产品利润率以中型规模(100 ~ 499头)牛场最高，为18.02%，大型牛场经营管理水平有待提高。

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