“非正式”的英语可以翻译为：unofficial，informal，informality ...

我误以为这是个非正式会议。I was wrong about it being a casual meeting.他开始非正式地为特德打理税务。He began informally to handle Ted's tax affairs for him.该方案也对非正式成员开放。The scheme is also open to non-members....

“非正式”的拼音为：fēi zhèng shì...