n.线虫，圆虫(身体不分节)

Nematodes are microscopic worms that can be found in almost every environment on Earth.
线虫是一种几乎在地球所有环境中都能找到的微小蠕虫。
In agriculture, plant-parasitic nematodes cause significant crop damage worldwide.
在农业中，植物寄生线虫在全球范围内对农作物造成了重大损害。
Some nematodes have developed resistance to common nematicides, making their control more challenging.
一些线虫已经对常见的线虫杀灭剂产生了抗性，使得对其控制变得更加困难。
A new species of nematode was discovered in the depths of the Mariana Trench.
在马里亚纳海沟的深处发现了一种新的线虫物种。
Nematodes play an important role as predators in soil ecosystems.
线虫作为土壤生态系统中的捕食者起着重要作用。
The roundworm (Ascaris lumbricoides) is a type of nematode that infects humans.
蛔虫（蛔虫属）是一种感染人类的线虫类型。
Fecal examination is used to diagnose nematode infections in livestock.
通过粪便检查可以诊断家畜是否患有线虫感染。
Certain free-living nematodes feed on bacteria and fungi in the soil.
某些自由生活的线虫以土壤中的细菌和真菌为食。
The discovery of antibiotic-producing nematodes could lead to new treatments for bacterial infections.
发现产生抗生素的线虫可能会带来治疗细菌感染的新方法。
In marine biology, nematodes are one of the most abundant groups of organisms in deep-sea sediments.
在海洋生物学中，线虫是深海沉积物中最丰富的一类生物群落。