基本解释环节动物类,环节动物同根派生 英汉例句Discuss the metamerism of annelids and its advantages briefly.浅谈环节动物身体的分节现象及其优点。Many molluscs and marine annelids have a trochophore larva in their life cycle.在许多软体动物和海洋环节动物生活史中具有担轮幼虫。