I would like it to be an informal occasion.我想把它办得不那么正式。

She is refreshingly informal.她不拘礼节, 令人耳目一新。

Most of the time Jenny wears informal clothes.大多数情况下, 珍妮都穿着便服。

'dress informal'“穿着自便”

For lunch, dress is informal.午餐时间穿着可随意。

They held an informal meeting to discuss the possibilities.他们召开了一次非正式会议, 讨论各种可能性。

an informal visit非正式访问

a series of informal discussions一系列非正式讨论

Her language is often informal.她的语言通常都比较口语化。