如何使用 "undulant" 造句

1. Cows may spread two serious diseases in milk . One is bovine tuberculosis . The other is called bang 's disease when . It affects cows , and undulant fever when it invades the human body .
奶牛在牛奶中可传播两种严重疾病。一种是牛结核,另一种,在影响奶牛时,叫牛布鲁菌病,侵人人体时则称作波状热。