The results indicated that there were twelve groups of soil fauna, Arthropoda,Mollusca,Annelida etc.
土壤
有
门、软
门、环门等12个目或类。
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Worms from the phylum Nematoda or the phylum Annelida have some sort of body cavity— a fluid-filled space between the body wall and the digestive tract that helps transport nutrients and corresponds to the development of more complex systems.
线虫门或环节动物门
蠕虫具有
腔——壁和
化道之间
液空间，有助于运输营养物质并与更复杂系统发展相对应。
