从而直接导致产品质量不稳定、品质低下。
Cause the product quantity unsteady thus and directly, the quality is lowly.
但目前由于纯鲜牛奶的质量不稳定，其营养成分也就不可靠了。
However, pure fresh milk as a result of the quality of instability, its nutrient composition is not unreliable.
但目前由于纯鲜牛奶的质量不稳定，其营养成分也就不可靠了。
But pure fresh milk as a result of the quality of instability, and its nutrient composition is not unreliable.
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