corroborateon Academic Vocabulary List使坚固,确证 corroborate corroborate(verb) 使坚固,确证 corroboration corroboration(noun) 确证,确证的事实,证实 corroborative corroborative(adjective) 确定的,确证的 corroborating corroborating(adjective) 确定的,确证的 Forms verbnounadjective corroborate corroboration corroborative corroborating