as an essential and probably effective actor in plan earning, but not the sole effective actor. 来自 Cambridge English Corpus 示例中的观点不代表剑桥词典编辑、剑桥大学出版社和其许可证颁发者的观点。Sensible Vocabulary: các từ liên quan và các cụm từ Cinema & theatre: performing, rehearsing & performing a