Processed and bottled foods are particularly acidic because of federal rules requiring high acidity as a preservative, Dr.Koufman says.

考夫曼博士表示，由于国家规定防腐剂必须为高酸性，精加工与灌装食品的酸性尤其的强。

youdao

Processed and bottled foods are particularly acidic because of federal rules requiring high acidity as a preservative, Dr. Koufman says.

考夫曼博士表示，由于国家规定防腐剂必须为高酸性，精加工与灌装食品的酸性尤其的强。

youdao

Processed and bottled foods are particularly acidic because of federal rules requiring high acidity as a preservative, Dr. Koufman says.

出于贮藏的需要，加工过的食品及罐装食品酸性尤其高，联邦法规对此也有相应的高酸规定，考夫曼博士说。

youdao

In convenience stores, the shelves for foods and bottled water are empty.

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