Ascaridae

例句：

1. 1.The ascarid nematodes are parasitic worms that live in the soil.
   线虫是寄生在土壤中的蠕虫。
2. 2. The ascarids are responsible for causing tapeworm infections in humans.
   线虫对人类的绦虫感染负有责任。
3. 3. The ascarids are found in many different habitats, including forests and deserts.
   线虫存在于许多不同的栖息地中，包括森林和沙漠。