Question

请高手翻译，最好能分析一下句子结构，谢谢！

One case appears to be caused by tainted milk, an all-too familiar culprit that keeps unnerving jittery consumers.

Answer 1

其中一例似乎是由受到污染的牛奶引起的，而受污染的牛奶则是一个大家都太熟悉不过的让已经心神不安的消费者心惊肉跳的罪魁祸首。