extensionon Basic wordsalso onCEFR Upper intermediate (B2)? Academic Vocabulary List (AVL)? 延期,延长,扩大 extensions extensions(noun) 延长(extension的复数),扩展,扩张 extension extension(noun) 延期,延长,扩大 extensive extensive(adjective) 大量的,广泛的,广阔的 extensively extensively(adverb) 广大地,广阔地 extensiveness extensiveness(noun) 大范围,延伸 Forms nounadjectiveadverb extensions extensive extensively extension extensiveness