gemnivirus

例句：

1. 1.This is the first time we have encountered a gemnivirus in our research.
   这是我们首次在我们的研究中遇到一个gemnivirus。
2. 2. The virus has been classified as a type of gemnivirus, which can cause severe illnesses.
   该病毒已被归类为一种类型的gemnivirus，可以引起严重的疾病。
3. 3. Due to the lack of effective vaccines against gemniviruses, they are considered a major public health threat.
   由于缺乏有效的针对gemnivirus的疫苗，它们被视为主要的公共卫生威胁。