He said staff at the milk stations may have added melamine to poor-quality or diluted milk to raise its protein content to an acceptable level.

• 他还说，奶站工作人员可能向低质或稀释过的牛奶中添加叁聚氰胺以增加牛奶的蛋白质含量，以使牛奶达到可以接受的标准。