Seedvax

例句：

1. 1. The researchers developed a new seed vaccine to combat the virus.
   研究人员开发了一种新疫苗来对抗这种病毒。
2. 2. The seed vaccine was tested on volunteers before being used in humans.
   这种种子疫苗在志愿者身上进行了测试，然后再用于人类。
3. 3. Seed vaccines are becoming increasingly popular as they offer protection against diseases without the need forregular booster shots.
   随着种子疫苗越来越受欢迎，它们提供了一种无需定期加强针即可预防疾病的方法。