食物中的添加剂降低了其营养价值。

The additives in the food ___vitiated its nutritional value.

由于双方未能履行关键条款，该协议被宣布无效。

The agreement was ___vitiated because both parties failed to fulfill key terms.

不良的同伴关系可能会腐蚀青少年的价值观。

Bad company can ___vitiate a teenager's values.