pro forma
adjective /ˌprəʊ ˈfɔːmə/
  /ˌprəʊ ˈfɔːrmə/
(from Latin) [usually before noun]- (especially of a document
 ) prepared in order to show the usual way of doing something or to provide a standard method尤指文件 按惯例的;惯常的;例行的 - a pro forma letter
格式信件  - pro forma instructions
常规指示  
 - a pro forma letter
 - (of a document
 ) sent in advance文件 预开的;预先通知性的;形式上的 - a pro forma invoice (= a document that gives details of the goods being sent to a customer)
形式发票  
 - a pro forma invoice (= a document that gives details of the goods being sent to a customer)
 - done because it is part of the usual way of doing something, although it has no real meaning
流于形式的;摆样子的 - a pro forma debate
流于形式的辩论  
 - a pro forma debate
 
词源early 16th cent.: from Latin.