原始问题：
养殖密度升高容易导致水产动物患病
从而影响水产养殖的生产。
With the increase of aquaculture density, it is easy to cause diseases of aquatic animals, which will affect the production of aquaculture.
养殖密度升高容易导致水产动物患病
从而影响水产养殖的生产。
With the increase of aquaculture density, it is easy to cause diseases of aquatic animals, which will affect the production of aquaculture.
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