Strongylus

例句：

1. 1. The strongylus is a common parasite that can cause gastrointestinal problems.
   钩虫是一种常见的寄生虫，可能导致胃肠道问题。
2. 2. Strongylus is a type of nematode that infects humans and animals.
   钩虫是一种线虫纲的寄生虫，感染人类和动物。
3. 3. In some cases, the strongylus can be treated with medication.
   在某些情况下，可以通过药物治疗钩虫。