measles of beef

例句：

1. 1. The smallpox vaccine is a life-saving treatment for many people.
   牛痘疫苗是挽救许多人生命的治疗方式。
2. 2. Smallpox was once a widespread disease, but it has been eradicated in most countries.
   牛痘曾经是一种广泛传播的疾病，但在大多数国家已经被根除。
3. 3. The smallpox virus can be transmitted from person to person through close contact or by touching infected surfaces.
   牛痘病毒可以通过密切接触或触摸被感染的表面来传播。