HFV

例句：

1. 1. HFV is a virus that causes hepatitis.
   HFV是一种导致肝炎的病毒。
2. 2. The HFV vaccine is effective in preventing the disease.
   HFV疫苗有效预防该疾病。
3. 3. HFV research has significant implications for public health.
   HFV研究对公共卫生有重大影响。