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1·Like most worms, helminths synthesize chitin for their pharynx.

如同大多数蠕虫，蛔虫为自身咽部合成甲壳素。

2·Microflora, Helminths, and the Immune System - Who Controls Whom?

微生物群、蠕虫与免疫系统—谁控制谁？

3·The pathogen in the waters are viruses, bacteria, protozoa and helminths.

水中有病毒、 细菌、 原生动物、蠕虫等多种病原体。

4·Helminths harm health, but also interfere with nutrition and even academic advancement.

寄生虫危害健康，另外也干扰了营养物质的吸收，甚至是学术的进步。