英语关于OF的用法The maintenance of law and order is of vital import

英语关于OF的用法The maintenance of law and order is of vital import The questions put forward at the meeting are of vital import 用英语回答 What is the difference between rule of law and rule by The formation ,maintenance ,and dissolution of the family ar the law of the the law of club and tooth的英文解释 英语翻译Item setup and maintenance of the following attributes: 英语翻译The design,construction,operation and maintenance of a n 英语翻译The standard of design and maintenance within our campus This matter is of vital importance to us.我想问一下这个句子里的of是什么用法 physical education is vital element of the traditional educa law of the