The results indicated that there were twelve groups of soil fauna, Arthropoda,Mollusca,Annelida etc.

土壤动物有肢动物门、软体动物门、环动物门等12个目或类。

A jawlike appendage of an arthropod.

包肢动物一族；小蜂科之蜂。

6 The insect nervous system is similar to that of other arthropods. Sensory structures include tympanal organs, compound eyes, and ocelli.

昆虫系统与其它肢动物似，感觉结构包听器、复眼、和单眼。