Fasciola hepatica

例句：

1. 1. Fasciola hepatica is a parasite that infects humans and animals.
   肝片形虫是一种感染人类和动物的寄生虫。
2. 2. The disease caused by Fasciola hepatica can be fatal if left untreated.
   由肝片形虫引起的疾病如果不治疗可能会致命。
3. 3. Researchers are trying to develop new treatments for Fasciola hepatica.
   研究人员正在尝试开发新的治疗肝片形虫的方法。