Poor: Most bulkingredients stored in tanks or vessels of poor design which are difficult to maintain in a sanitary condition.
差：大多数散装原料储存在设计拙劣的缸或容器中，难以保持卫生的条件。
2
Replace a biscuit's sugar with artificial sweetener and a scientist must add ingredients to provide bulk and turn the biscuit's surface brown.
用人工甜味剂代替饼干中的蔗糖，科学家就要加入添加剂，提供散装，而且让饼干表面变成褐色。
3
Chinese suppliers of bulk pet food ingredients were found to have been adding the chemical to artificially boost the protein readings of their products.