Fasciolidae

例句：

1. 1. The fasciolids are a group of parasitic nematodes that infect plants and animals.
   线虫科是一类寄生于植物和动物的线虫。
2. 2. The study of fasciolids is important for understanding the ecology of soil-dwelling organisms.
   研究线虫科对于理解土壤中生物的生态学非常重要。
3. 3. The fasciolids are known for their ability to cause disease in humans and animals.
   线虫科以其在人类和动物中引起疾病的能力而闻名。