Cowpox
01
牛痘, 疫苗
a viral infection in cows that can be transmitted to humans, historically used in developing the smallpox vaccine
例子
Farmers take precautions to prevent the spread of cowpox among their cattle.
农民采取预防措施以防止牛痘在他们的牛群中传播。
牛痘, 疫苗