nematode of potato

例句：

1. 1. The nematode is a common parasite that infects humans and animals.
   线虫是一种常见的寄生虫，感染人类和动物。
2. 2. The nematode lives in the soil and feeds on plant roots.
   线虫生活在土壤中，以植物根部为食。
3. 3.The nematode has been found to be responsible for many diseases in humans.
   研究发现线虫是许多人类疾病的罪魁祸首。