deteriorative change

• 变质

deteriorative change的用法和样例：

例句

1. There is no doubt that the imperialists want socialist countries to change their nature.
   帝国主义肯定想要社会主义国家变质。
2. The polymers change color in the presence of increasing leels of these biogenic amines to indicate degrees of food spoilage.
   这些聚合物在那些生物胺的水平升高时颜色发生了改变，对食物的变质程度作出了指示。