“正式”的反义词有哪些

“正式”的拼音为：zhèng shì...

“正式”的英语可以翻译为：formal，official，regular，in due form ...

正式签订了每年可续签的合同。A formal contract is signed which is renewable annually.正式确立合作关系将会促进共和国之间合作的顺利进展。The formalization of co-operation between the republics would produce progress.今天他将正式宣布参加总统竞选。Today he is formally announcing...