killed vaccine

例句：

1. 1. The vaccine was designed to protect against the deadly virus.
   该疫苗旨在预防致命病毒。
2. 2. The government has been accused of using the vaccine as a weapon against its own citizens.
   政府被指控利用疫苗作为对本国公民的武器。
3. 3.The scientists have been working tirelessly to create a safe and effective killed vaccine.
   科学家们一直在努力工作，以创造一种安全有效的疫苗。