食品加工过程中通常存在水和微生物（酵母）。
Water and bio-organisms (yeasts) are often present in food processing.
在食品加工过程中很多真正有营养价值的物质实际上却丧失了。
Much of the really nutritive material actually was refined out of the foods.
请说明宠物食品在加工厂经历的处理过程。
Please describe the processing treatment that the pet food undergoes in the manufacturing facility.
请说明宠物食品在加工厂经历的处理过程。
Please describe the processing treatment that the pet food undergoes in the manufacturing facility.
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