| 单词 | circumvallate | 
| 释义 | Word Frequency circumvallate(ˌsɜːkəmˈvæleɪt) verb (transitive) to surround with a defensive fortification  Derived forms circumvallation (ˌcircumvalˈlation) noun Word origin C19: from Latin circumvallāre, from circum- + vallum rampart | 
	
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