formal surfing attire 怎么翻译?

formal surfing attire 怎么翻译? formal FORMAL formal是什么意思 in formal occasion还是on formal occasion? formal什么意思 formal test RT, formal system是什么意思 formal and informal communation Formal hacking是什么意思 英语：formal,normal区别? formal ＝normal Formal occasion是什么意思? formal verification是什么意思 vocation formal 怎么翻译 forth and formal Surfing the internet,what about surfing on internet怎么读?