principalon Academic Word Listalso onCEFR Intermediate (B1)? CEFR Upper intermediate (B2)? Academic Vocabulary List (AVL)? 主要的,最重要的, 负责人,首长 principal principal(adjective) 主要的,最重要的 principal principal(noun) 负责人,首长 principally principally(adverb) 主要地,大部分 Forms adjectivenounadverb principal principal principally