smallpox vaccine

• 天花疫苗,天花菌苗,牛痘苗

smallpox vaccine的用法和样例：

例句

1. The smallpox vaccine has saved many lives.
   天花疫苗挽救了许多人的生命。
2. She wasn't vaccinated against smallpox.
   她以前没接种过天花疫苗。