early germ

例句：

1. 1. Early germs can cause seriousillnesses.
   早期病毒可能导致严重的疾病。
2. 2. The studyfound that the early germs were responsiblefor the outbreak.
   研究发现，早期病毒是导致疫情爆发的原因。
3. 3. Doctors recommend vaccinationsto prevent early germs from spreading.
   医生建议接种疫苗以防止早期病毒的传播。