freeze-dried BCG vaccine

例句：

1. 1.The freeze-dried BCG vaccine is a safe and effective way to prevent tuberculosis.
   冷冻干燥BCG疫苗是一种安全有效的预防结核病的方法。
2. 2.Freeze-dried vaccines are often used in emergency situations where immediate access to medical care is critical.
   在紧急情况下，冷冻干燥疫苗通常用于需要立即获得医疗照顾的情况。
3. 3. The freeze-dried vaccine was developed to combat the spread of the virus in crowded environments.
   这种冷冻干燥疫苗是为了在拥挤的环境中控制病毒传播而开发的。