| 单词 | volva | 
| 释义 | Word Frequency volva(ˈvɒlvə) nounWord forms:  plural -vae (-viː) or -vas  botany a cup-shaped structure that sheathes the base of the stalk of certain mushrooms  Derived forms volvate (ˈvɒlvɪt, -veɪt) adjective Word origin C18: from Latin: a covering, from volvere to wrap | 
	
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