informalityn.非正式；不拘礼节informaladj.非正式的；不拘形式的Informal Discussion on Products Design漫谈产品设计Informal seminars and brownbag sessions.安排非正式的研讨会和餐叙。informal usage attributing authenticity.（非正式用法）真实的东西。informal terms for personal possessions.个人拥有物的非正式用语。Informal organization management in hospital论医院非正式组织的管理Informal organization for university student大学生非正式组织informalization in colleges and universities高校信息化informal abbreviation of 'representative'.吲哚卡因<局麻药>